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HESI A2 · FREE FOUNDATION STUDY GUIDE

HESI A2 Study Guide: Reading, Math and Science Foundations

Use the text, quantities and models actually given. This guide links 12 original academic diagnostics to 12 substantial guide units and 12 focused retrieval cards. Its 14-day sequence is a sample foundations plan, not a national HESI schedule or an official score conversion. Confirm what your own program requires, then use the error log to identify the next skill to study.

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12 learning units · 12 original questions · 12 review cards · Free, no sign-up

What this guide covers

Twelve actual guide units, not a complete course or 200-question bank. School-selected sections, timers, calculator rules, cut scores and admission criteria remain institution-specific. Not HESI Exit, NCLEX, clinical practice, dosing advice, secure-item recall or a pass/admission prediction. Qualified educator review pending.

Independent AI content review completed for this content version. Qualified educator review and learner calibration remain pending. These chapters and the linked lessons are the same learning units.

Coverage and remaining gaps →

Set your scope,then identify the main idea

This guide supports selected academic foundations for the HESI Admission Assessment(A2). It is not a HESI Exit Exam or NCLEX review, and it is not a complete admissions course or an official practice examination. Elsevier’s public sixth-edition review contents name math, reading, vocabulary, grammar, biology, chemistry, and anatomy/physiology. That contents list is a preparation reference, not proof that every school requires every section. TCC explicitly distinguishes sections offered from requirements determined by individual programs. Gateway identifies program-specific choices and warns that recommended section times are pacing guidelines. Confirm your own program’s sections, timing, calculator rules, attempt policy and score criteria before treating any plan as applicable.

The attempted 2025 faculty-guide URL did not yield a usable document in this acquisition. Its failed response is retained, and no timer or threshold from an indexed excerpt is presented as a national rule. Our twelve units are real sections of this offline guide; they are not twelve production courses or a 200-question bank. The fourteen-day schedule uses local section, question and card identifiers. Any omitted science section can be treated as optional academic study when your program does not require it.

For reading, the main idea is the point that organizes the details. Consider an original miniature example: a town keeps familiar street names but adds verified location coordinates to records that were hard to distinguish. A summary about clearer identification explains both actions. A summary about building new roads does not, even if roads are the general topic. Ask which candidate statement covers the important details without adding a project the passage never describes. Then test the summary against the whole paragraph rather than choosing the first appealing sentence.

Set your scope,then identify the main idea →

Limit an inference to the evidence given

A reading inference combines stated details into a supported conclusion. It is stronger than a random possibility but should not be stronger than the evidence. A missing entry can mean that information was not collected; it does not automatically mean that the condition was bad or the event never happened. When a writer defines a symbol or a blank field, that definition should control your interpretation.

Worked example: a volunteer train observer records arrivals between 08:00 and 10:00. An empty entry for a later departure cannot establish whether that departure was cancelled, because it lies outside the observation interval. The observer’s limited log and a railway cancellation notice are different types of evidence. A careful answer states the limit of the record without inventing either success or failure outside it.

Underline words that set boundaries, such as only, during, recorded and not yet. Compare each answer to those boundaries. An answer may be plausible in everyday life and still be unsupported by the particular passage. In your explanation, name the missing observation or the explicit detail that rules an alternative out. You do not need outside knowledge about trains, walking routes or archives to answer these original passages; the reasoning belongs to the text.

Limit an inference to the evidence given →

Recover word meaning from its local context

Context includes the words and sentences surrounding an unfamiliar term. Writers may supply a definition, a contrast, an example or a consequence that narrows the meaning. Before substituting a dictionary meaning you happen to remember, ask what role the word plays in this sentence. The same word can have different senses in different settings.

Worked example: an editor describes a timetable as tentative and immediately says it may change when a venue confirms its hours. The revision condition supports a meaning like not yet final. It does not support inaccurate, old or unrelated merely because those words might also describe some timetables. Substitute your proposed meaning and check whether the next sentence still makes sense.

The diagnostic uses a different context and asks for the closest meaning, not a scientific fact about the specimen mentioned. Mark the clue that determines your choice. When reviewing vocabulary, record the term, a short sentence and the evidence for its meaning. Avoid memorizing an answer letter or treating every unfamiliar word as a medical term. This small unit teaches a method; it is not a complete HESI vocabulary list or a promise that these words appear on a secure test.

Recover word meaning from its local context →

Preserve grammatical form across a list

Parallel structure connects comparable ideas using corresponding grammatical forms. A list of actions can use infinitive phrases, gerund phrases or another consistent pattern. The aim is not to force every sentence into one template, but to keep the coordinated elements in the relationship the sentence establishes. Meaning and form must agree.

Worked example:“The group plans to sort folders, to index photographs, and to store receipts.” The three actions share the to-plus-verb form. Replacing the last item with storage of receipts changes that form. In a different sentence beginning“The work includes sorting, indexing, and storing,” gerunds would be appropriate. Thus a form that is correct somewhere can be a poor fit in the sentence being tested.

Find the words coordinated by and or or, and compare those units rather than nearby nouns. Read the sentence once for meaning and once for pattern. In the diagnostic, the first two actions establish the pattern clearly; you need not revise their subjects or invent punctuation. Explain what grammatical type each distractor supplies and why it does not fit this particular series. This distinguishes a rule-based answer from a vague judgment that one choice merely sounds better.

Preserve grammatical form across a list →

Track which quantity a fraction acts on

A fraction of a quantity is a multiplication relationship. In a sequence, the quantity can change before the next fraction is applied. Label the base at every step: original inventory, quantity removed, remaining inventory, and the requested final quantity. A fraction is not a fixed number of objects until its base is known.

Worked example: a studio starts with 60 blank cards, gives away one quarter, and decorates two fifths of those left. The first removal is 15, so 45 remain. The decorated portion is(2/5)×45=18, and the undecorated remainder is 45−18=27. Applying two fifths to the original 60 would answer a different question. Reporting 18 would confuse the decorated part with the remaining part.

A compact check writes the retained fractions as a product: 60×(3/4)×(3/5)=27. This is a second route to the same answer, not a second counted diagnostic family. Keep whole-number units attached to the result and ask whether the answer is less than the quantity available at that step. The guide uses ordinary stock and artwork contexts; it provides no clinical dose or treatment calculation. Calculator availability for your actual exam remains a question for your institution and testing instructions.

Track which quantity a fraction acts on →

Reverse a percentage change in the correct order

A percentage compares a part with a base. After a 20% reduction, the retained amount is 80% of the original base. Adding 20% of the reduced amount does not undo that reduction, because the two percentages use different bases. Translate the words into an equation before moving numbers.

Worked example: a catalog fee is discounted 10%, then a fixed $4 mailing charge is added, producing a $31 total. Let the original fee be x. The relation is 0.90 x+4=31. Removing the fixed addition gives 0.90 x=27, then dividing by 0.90 gives x=30. Forward checking confirms 0.90×30+4=31. Dividing the entire 31 by 0.90 would incorrectly apply the discount relationship to mailing too.

Write the order of operations in words beside the equation: change the base by a percentage, then add the fixed amount. Reverse those operations in the opposite order when solving. Do not decide on multiplication or division solely from the word percent. The diagnostic is an original fee problem with fully specified arithmetic, not a financial recommendation. Rounding is unnecessary for its exact values; when a different problem requires rounding, state the requested precision rather than silently changing the calculation.

Reverse a percentage change in the correct order →

Use both a ratio and a geometric constraint

A ratio describes relative sizes; it does not by itself give their actual lengths. A second condition, such as perimeter, can fix the scale. For a rectangle, the perimeter is twice the sum of length and width. Do not confuse that sum with the perimeter or the perimeter with area.

Worked example: a rectangle has width: length=2: 3 and perimeter 50 cm. Write width=2 k and length=3 k. Then 2(2 k+3 k)=50, so 10 k=50 and k=5 cm. The sides are 10 cm and 15 cm. Check both original conditions: 10:15 simplifies to 2: 3, and 2(10+15)=50. A result that passes one check but fails the other is not a solution.

The diagnostic changes both the ratio and perimeter but uses the same taught method; it is the one diagnostic for this unit, not evidence of official question frequency. Make a small labeled sketch when the word length and the word width are easy to swap. Record linear units for perimeter and side length. An area answer would require square units and a different calculation. For a chosen equation, show why every term corresponds to a side rather than relying on a memorized operation with the total.

Use both a ratio and a geometric constraint →

Separate proton identity,nuclear mass count and charge

Atomic number is the proton count. Mass number counts protons plus neutrons, while ion charge reflects the imbalance between positive protons and negative electrons. These three descriptions answer different questions. Do not add electrons to mass number or use neutron count as the element’s identity. Mass number is also not the weighted average atomic mass printed for a natural mixture of isotopes.

Worked example: an abstract particle record contains 8 protons, 10 neutrons and 10 electrons. Its atomic number is 8, and its mass number is 8+10=18. In elementary-charge units, the net charge is 8−10=−2. The excess electrons explain the negative sign. Nothing in this arithmetic changes the number of protons merely because the particle has gained electrons.

Use three labeled rows before looking at an answer: Z=protons, A=protons+neutrons, and charge=protons−electrons. Check each part of a compound answer independently. One correctly calculated field does not rescue another wrong field. The original diagnostic supplies all required counts; you do not need a clinical reference range or a memorized atomic weight. This is a foundational chemistry model, not advice about radioactive materials, chemical handling or human physiology.

Separate proton identity,nuclear mass count and charge →

Balance coefficients without changing the species

A chemical formula’s subscripts describe the atom proportions within the species. A coefficient multiplies the entire formula. Balancing an equation requires equal counts of each element on the two sides. It does not permit changing the products’ identities until their arithmetic is convenient.

Worked symbolic example: let generic element symbols A and B form the species AB\mathrm{AB}. The relation A2+B2→2AB\mathrm{A}_2+\mathrm{B}_2\rightarrow2\mathrm{AB} has two A atoms and two B atoms on each side. The coefficient 2 belongs to the whole AB\mathrm{AB} unit, so it produces two A atoms and two B atoms. Changing AB\mathrm{AB} to AB2\mathrm{AB}_2 would describe another species, not another count of the same species. These are symbolic counting examples, not laboratory preparation directions.

For a longer formula, make a table with one row per element. Multiply each subscript by the coefficient, including an unwritten subscript 1. After the counts match, check whether all coefficients share a divisor; the requested smallest whole-number ratio removes such a common factor. In the diagnostic, all formulas are fixed and each proposed coefficient set can be tested directly. Explain a distractor by naming the element whose count fails, rather than saying only that the equation looks unbalanced.

Balance coefficients without changing the species →

Follow newly labeled cargo through a specified pathway

In the usual eukaryotic secretory pathway described in the source, proteins associated with the rough endoplasmic reticulum move in vesicles to the Golgi for further modification and sorting. Secretory vesicles can then carry cargo onward. This is not a claim that every protein in every cell follows that route; the diagnostic explicitly defines the pathway for the protein under discussion.

Worked model: a tracer is introduced only after a transport connection is blocked. A newly labeled cargo cannot already be waiting downstream from a time before labeling began. Distinguish the old unlabeled pool from the newly labeled pool, and keep the block’s location separate from the site of synthesis. If synthesis continues upstream, new label may be seen there even when new downstream arrivals are prevented.

This is a causal prediction from a stated model, not a real experimental protocol. Draw the three boxes and the arrow that is blocked. Then explain which proposed observation would require an unstated bypass or a reversal of the route. Avoid replacing the specified mechanism with a general claim that the whole cell instantly stops functioning. The case’s short interval and initial labeling conditions deliberately limit the inference; later degradation, alternative secretion or a different protein would need additional information.

Follow newly labeled cargo through a specified pathway →

Count joined chromosomes and copied DNA separately

A replicated chromosome contains joined sister chromatids before those sisters separate. The counting convention matters. In this unit, chromosomes are counted as still-undivided centromere units before sister separation. Copying DNA creates the paired chromatids; it does not by itself perform the later separation or a meiotic reduction.

Worked model: a cell begins with 4 chromosomes. At the specified stage, each has two sister chromatids joined at an undivided centromere. The chromosome count remains 4, and the chromatid count is 4×2=8. Counting 8 chromosomes at that stage would count each joined copy as an already separated unit. Counting 2 would introduce a reduction that the model never describes.

Write both the stage and the convention beside your numbers. A diagram that looks like anX does not mean that there are two already independent chromosomes under this convention. Conversely, a later stage after separation needs a fresh analysis rather than automatic reuse of this result. The diagnostic uses a model species and gives all counts; it does not ask you to diagnose a human chromosome condition or infer a medical outcome. Its goal is to distinguish copying from the events that change how chromosome units are counted.

Count joined chromosomes and copied DNA separately →

Keep anatomical directions attached to the subject

Anatomical directions provide a consistent reference frame. Right and left belong to the subject, not to whichever side of the page the observer happens to call right. A human in anatomical position is upright and faces forward, with the palms facing forward. The simple figures here are paper models, not patient assessments.

Worked perspective: imagine a front-facing paper figure with its anatomical right hand marked. An observer looking directly at that unreversed figure sees the marked hand on the observer’s left. Turning the observer’s perspective around would change the view, not rename the figure’s anatomical side. A mirror or image reversal would introduce an extra transformation, so the diagnostic explicitly excludes it.

Before selecting an option, state whose reference frame each phrase uses. Compare the viewing statement and the anatomical statement separately; an answer can get one right and reverse the other. This unit samples spatial terminology rather than the full anatomy-and-physiology domain. After completing the fourteen-day plan, compare your remaining subject gaps with your program’s actual requirements. Repeated pilot questions are already-seen review, not an unseen official post-test. Twelve successful answers cannot establish admission eligibility, an official scaled result or readiness for clinical practice. Qualified educator review remains pending.

Keep anatomical directions attached to the subject →

Try the twelve original questions

Work without the explanation first. These are learning diagnostics, not a full exam or an official score prediction.

QUESTION 1

Choose a main idea that explains the passage’s details.

Original passage: A seed archive once listed each collection under a familiar plant name. Staff found that a familiar name could refer to different plants in different regions. The new catalog links that name to a checked specimen and a collection record. Entries with uncertain identities are marked for further review. Visitor displays keep familiar names alongside verified identifiers, so visitors can still recognize the labels they know. The archive has not changed its storage capacity. Which statement best expresses the main idea?

  1. The archive replaces specimen checking with a simpler system of familiar names.
  2. The archive increases storage space before accepting more seed collections.
  3. The archive improves identity tracking while preserving usable familiar labels.
  4. The archive treats unresolved labels as evidence that the collections have failed.
Reveal answer and all option explanations

Answer C: The linked specimens and records improve identity tracking, while the visitor labels retain familiar names. That statement explains both major strands. Storage expansion, reduced checking and a declaration of failure conflict with or exceed the passage.

  • A. The catalog adds checked specimens and verified identifiers; it does not replace checking with familiar names.
  • B. The passage explicitly says storage capacity did not change; this substitutes a different project for the catalog work.
  • C. Correct: The linked specimens and records improve identity tracking, while the visitor labels retain familiar names. That statement explains both major strands. Storage expansion, reduced checking and a declaration of failure conflict with or exceed the passage.
  • D. Uncertain identities are marked for review, not declared failed collections. This turns uncertainty into a stronger unsupported conclusion.
Set your scope,then identify the main idea →Practice 1 linked questions →
QUESTION 2

Distinguish an unrecorded condition from a negative finding.

Original passage: A walking-route team logs only paths its members have visited that month. Every completed visit in the current log occurred in dry weather. A blank line means the team has not yet visited that path; it is not a closure notice. The log contains no rainy-weather observations. Which conclusion follows from this information?

  1. An unvisited path has worse conditions than every path with a completed entry.
  2. The dry-weather entries establish how those paths will perform during rain.
  3. Blank entries identify the paths that the team has closed to the public.
  4. The log does not establish the condition of an unvisited path.
Reveal answer and all option explanations

Answer D: A blank entry establishes that no monthly visit is recorded, not whether the path is good, bad or closed. The dry-weather scope also cannot be extended to rainy conditions. Keep the conclusion within the supplied observations.

  • A. No comparative condition data for an unvisited path are given; a blank line represents no visit.
  • B. The passage limits the observations to dry weather and supplies no rainy-weather results.
  • C. The passage expressly distinguishes an unvisited path from a closure notice.
  • D. Correct: A blank entry establishes that no monthly visit is recorded, not whether the path is good, bad or closed. The dry-weather scope also cannot be extended to rainy conditions. Keep the conclusion within the supplied observations.
Limit an inference to the evidence given →Practice 1 linked questions →
QUESTION 3

Use an explicit review condition to infer a word’s contextual meaning.

An editor writes: “The specimen label is provisional. We will use it for now, but a second examination may require us to change it.” In this sentence, provisional most nearly means:

  1. Temporary
  2. Permanent
  3. Unrelated
  4. Previous
Reveal answer and all option explanations

Answer A: “For now” and the possibility of revision identify a temporary status pending confirmation. The context supplies the meaning without requiring outside knowledge about the specimen.

  • A. Correct: “For now” and the possibility of revision identify a temporary status pending confirmation. The context supplies the meaning without requiring outside knowledge about the specimen.
  • B. A label that may change after review is not established permanently.
  • C. The passage concerns the label’s status, not whether it is related to the specimen.
  • D. The label is being used now; provisional does not mean that it has already been replaced.
Recover word meaning from its local context →Practice 1 linked questions →
QUESTION 4

Complete a coordinated list with a matching grammatical form.

Choose the completion that makes all three listed actions parallel: “The volunteers agreed to label packets, to weigh samples, and _____.”

  1. records arrivals
  2. a record of arrivals
  3. to record arrivals
  4. recording arrivals
Reveal answer and all option explanations

Answer C: The three actions share the infinitive pattern: to label, to weigh, to record. The grammatical relationship, rather than the subject matter, determines the matching completion.

  • A. This finite verb does not match the preceding “to label” and “to weigh” phrases.
  • B. This noun phrase names a record rather than supplying a third parallel action.
  • C. Correct: The three actions share the infinitive pattern: to label, to weigh, to record. The grammatical relationship, rather than the subject matter, determines the matching completion.
  • D. This gerund phrase changes form after two infinitive phrases.
Preserve grammatical form across a list →Practice 1 linked questions →
QUESTION 5

Track a changing base in two sequential fraction operations.

A workshop has 72 unmounted prints. It sends one third of them to an exhibition. It then mounts three eighths of the prints that remain. How many prints are still unmounted at the workshop?

  1. 18 prints
  2. 30 prints
  3. 21 prints
  4. 45 prints
Reveal answer and all option explanations

Answer B: One third of 72 is 24, leaving 48 at the workshop. Three eighths of 48 is 18 newly mounted. The unmounted remainder is 48−18=30 prints. The second fraction uses 48 as its base, not 72.

  • A. This is the number newly mounted, not the number still unmounted.
  • B. Correct: One third of 72 is 24, leaving 48 at the workshop. Three eighths of 48 is 18 newly mounted. The unmounted remainder is 48−18=30 prints. The second fraction uses 48 as its base, not 72.
  • C. This subtracts three eighths of the original 72 from the remaining 48, even though the second fraction applies to the remainder.
  • D. This subtracts three eighths of 72 and ignores the prior exhibition allocation.
Track which quantity a fraction acts on →Practice 1 linked questions →
QUESTION 6

Undo a fixed addition before reversing a percentage change.

An archive subscription has a base charge. A 20% discount is applied to that base, then a fixed $6 dispatch charge is added. The final total is $46. What was the base charge?

  1. $51.50
  2. $32.00
  3. $50.00
  4. $48.00
Reveal answer and all option explanations

Answer C: Remove the undiscounted dispatch charge first: 46−6=40. The $40 is 80% of the base, so 0.8 x=40 and x=50. Checking forward gives 0.8×50+6=46.

  • A. Dividing 46 by 0.8 before subtracting 6 incorrectly treats the dispatch charge as discounted too.
  • B. Multiplying the discounted $40 by 0.8 applies another discount rather than finding the original base.
  • C. Correct: Remove the undiscounted dispatch charge first: 46−6=40. The $40 is 80% of the base, so 0.8 x=40 and x=50. Checking forward gives 0.8×50+6=46.
  • D. Adding 20% to the discounted $40 uses the reduced amount as the percentage base and does not reverse a 20% reduction.
Reverse a percentage change in the correct order →Practice 1 linked questions →
QUESTION 7

Combine an aspect ratio with a perimeter constraint.

A rectangular display has width: length=3: 5 and a perimeter of 64 cm. What is its length?

  1. 12 cm
  2. 20 cm
  3. 32 cm
  4. 40 cm
Reveal answer and all option explanations

Answer B: Write width=3 k and length=5 k. The perimeter is 2(3 k+5 k)=16 k=64, so k=4 cm and length=5×4=20 cm. Check: 2(12+20)=64 cm.

  • A. This is the width, 3×4, rather than the requested length.
  • B. Correct: Write width=3 k and length=5 k. The perimeter is 2(3 k+5 k)=16 k=64, so k=4 cm and length=5×4=20 cm. Check: 2(12+20)=64 cm.
  • C. This is the sum of width and length, not the longer side alone.
  • D. This treats 64 as width plus length instead of twice their sum.
Use both a ratio and a geometric constraint →Practice 1 linked questions →
QUESTION 8

Keep element identity, mass number and charge as separate counts.

A particle has 17 protons, 18 neutrons and 18 electrons. Which record gives its atomic number Z, mass number A and net charge?

  1. Z=17; A=35; charge=−1
  2. Z=18; A=35; charge=−1
  3. Z=17; A=36; charge=−1
  4. Z=17; A=35; charge=+1
Reveal answer and all option explanations

Answer A: Z counts 17 protons. A counts the nucleus: 17+18=35. Net charge in elementary-charge units is 17−18=−1. Changing electrons affects charge without changing the proton-defined element identity.

  • A. Correct: Z counts 17 protons. A counts the nucleus: 17+18=35. Net charge in elementary-charge units is 17−18=−1. Changing electrons affects charge without changing the proton-defined element identity.
  • B. Atomic number counts protons, not neutrons or electrons.
  • C. Mass number is protons plus neutrons: 17+18=35. Electrons are not added to mass number.
  • D. There is one more electron than proton, so the net charge is negative, not positive.
Separate proton identity,nuclear mass count and charge →Practice 1 linked questions →
QUESTION 9

Balance atom counts while keeping compound formulas fixed.

For the symbolic equation P4\mathrm{P}_4+Cl2\mathrm{Cl}_2→PCl3\mathrm{PCl}_3, keep all chemical subscripts fixed. Which smallest whole-number coefficients, in the order P4\mathrm{P}_4, Cl2\mathrm{Cl}_2, PCl3\mathrm{PCl}_3, balance the equation?

  1. 1, 3, 4
  2. 4, 6, 4
  3. 1, 6, 2
  4. 1, 6, 4
Reveal answer and all option explanations

Answer D: One P4\mathrm{P}_4 unit supplies 4 P atoms, requiring 4 PCl3\mathrm{PCl}_3 units. Those products contain 4×3=12 Cl atoms, supplied by 6 Cl2\mathrm{Cl}_2 units. The coefficients 1, 6, 4 have no common divisor greater than 1. Changing a subscript would change the chemical species.

  • A. Four PCl3\mathrm{PCl}_3 units contain 12 chlorine atoms, but three Cl2\mathrm{Cl}_2 units supply only 6.
  • B. Four P4\mathrm{P}_4 units supply 16 phosphorus atoms while four PCl3\mathrm{PCl}_3 units contain only 4.
  • C. The left side has 4 P and 12 Cl, while two PCl3\mathrm{PCl}_3 units have 2 P and 6 Cl.
  • D. Correct: One P4\mathrm{P}_4 unit supplies 4 P atoms, requiring 4 PCl3\mathrm{PCl}_3 units. Those products contain 4×3=12 Cl atoms, supplied by 6 Cl2\mathrm{Cl}_2 units. The coefficients 1, 6, 4 have no common divisor greater than 1. Changing a subscript would change the chemical species.
Balance coefficients without changing the species →Practice 1 linked questions →
QUESTION 10

Predict a tracer pattern from an explicitly blocked transport step.

In a simplified eukaryotic-cell model, a newly labeled secreted protein follows rough ER→Golgi→secretory vesicle. Labeling starts after transport from the ER to the Golgi has been completely blocked. Protein synthesis continues, and no labeled protein was present before the block. Over the short observation interval, which pattern is consistent with this model?

  1. New label bypasses the ER and first appears inside outgoing secretory vesicles.
  2. New label appears in the ER but does not newly arrive in the Golgi.
  3. New label first appears in the Golgi, then moves backward into the ER.
  4. New label cannot appear in the ER because the Golgi makes this protein.
Reveal answer and all option explanations

Answer B: The label is introduced only after the block, so there is no previously labeled Golgi pool. New synthesis can label the ER, but the stipulated block prevents that new cargo from reaching the Golgi. The inference concerns this model and interval, not every protein-trafficking route.

  • A. The question stipulates the ER-to-Golgi pathway for this cargo; the block does not establish a bypass.
  • B. Correct: The label is introduced only after the block, so there is no previously labeled Golgi pool. New synthesis can label the ER, but the stipulated block prevents that new cargo from reaching the Golgi. The inference concerns this model and interval, not every protein-trafficking route.
  • C. This reverses the supplied route and ignores the complete ER-to-Golgi block.
  • D. The model says synthesis continues and places entry at rough ER, not protein synthesis in the Golgi.
Follow newly labeled cargo through a specified pathway →Practice 1 linked questions →
QUESTION 11

Distinguish replicated DNA copies from chromosome number before separation.

A model species has 6 chromosomes before DNA replication. After replication but before sister chromatids separate, each chromosome consists of two joined sister chromatids. Count chromosomes by their still-undivided centromeres. Which count fits this stage?

  1. 6 chromosomes; 12 chromatids
  2. 12 chromosomes; 12 chromatids
  3. 3 chromosomes; 6 chromatids
  4. 6 chromosomes; 6 chromatids
Reveal answer and all option explanations

Answer A: The 6 undivided chromosome units remain 6 under the stated counting convention. Each has 2 sister chromatids, giving 6×2=12. DNA copying does not itself perform the later separation or a meiotic reduction.

  • A. Correct: The 6 undivided chromosome units remain 6 under the stated counting convention. Each has 2 sister chromatids, giving 6×2=12. DNA copying does not itself perform the later separation or a meiotic reduction.
  • B. This counts each joined sister copy as a separate chromosome before the stated centromere separation.
  • C. This introduces a halving event that the stem does not describe.
  • D. This retains the chromosome count but omits the doubling into two sister chromatids per chromosome.
Count joined chromosomes and copied DNA separately →Practice 1 linked questions →
QUESTION 12

Keep anatomical side tied to the subject rather than the observer.

A paper human figure in anatomical position faces the observer directly, with no mirror or image reversal. A marker is on the figure’s anatomical left forearm. In this frontal view, which description is correct?

  1. The marker appears on the observer’s right and becomes anatomically right.
  2. The marker appears on the observer’s left and becomes anatomically right.
  3. The marker appears on the observer’s left and remains anatomically left.
  4. The marker appears on the observer’s right and remains anatomically left.
Reveal answer and all option explanations

Answer D: Anatomical left belongs to the subject. For an unreversed frontal view of a facing figure, that side appears on the observer’s right. Changing the observer’s viewpoint does not rename the subject’s anatomical sides.

  • A. The viewer’s right is not the subject’s anatomical right; the reference frame must remain attached to the figure.
  • B. This reverses both the viewing relationship and the stated anatomical-side designation.
  • C. When subject and observer face each other, their left-right directions are opposite; no mirror reversal is stated.
  • D. Correct: Anatomical left belongs to the subject. For an unreversed frontal view of a facing figure, that side appears on the observer’s right. Changing the observer’s viewpoint does not rename the subject’s anatomical sides.
Keep anatomical directions attached to the subject →Practice 1 linked questions →

Retrieve the idea before revealing it

What does a blank observation field prove when the text defines it as “not yet visited”?

Reveal the idea

It proves only that no visit is recorded under that definition. It does not establish good conditions, bad conditions or closure; keep the inference within the passage’s evidence.

Limit an inference to the evidence given →Review 1 linked cards →

What should you check before assigning a familiar meaning to an unfamiliar word in a sentence?

Reveal the idea

Check the surrounding definition, contrast, example or consequence. Substitute the proposed meaning and confirm that the nearby sentences still fit; context can narrow the intended sense.

Recover word meaning from its local context →Review 1 linked cards →

In the pattern “to sort, to count, and___,” what form should the final coordinated action match?

Reveal the idea

An infinitive phrase such as “to file.” The matching relationship is to-plus-verb; another sentence could correctly use gerunds instead, but this list has already established its pattern.

Preserve grammatical form across a list →Review 1 linked cards →

When a second fraction applies to what remains after an earlier removal, which base should you use?

Reveal the idea

First calculate the remainder, and multiply the second fraction by that remainder. Label the removed part and the final retained part separately to avoid reporting the wrong quantity.

Track which quantity a fraction acts on →Review 1 linked cards →

For cargo explicitly following rough ER→Golgi→secretory vesicle, what extra timing fact matters when predicting a newly labeled signal after an ER-to-Golgi block?

Reveal the idea

Whether label existed before the block. If labeling starts only afterward, there is no preexisting labeled downstream pool; new ER cargo cannot cross the stipulated complete block. This does not describe every protein pathway.

Follow newly labeled cargo through a specified pathway →Review 1 linked cards →

Under an undivided-centromere chromosome-counting convention, what does DNA replication change before sister chromatids separate?

Reveal the idea

The number of sister chromatid copies doubles, but the joined chromosome-unit count is unchanged until separation. For example, 4 joined units become 4 replicated chromosomes with 8 chromatids. A later stage needs a new count.

Count joined chromosomes and copied DNA separately →Review 1 linked cards →

In an unreversed frontal view of a figure facing you, does the figure’s anatomical left become anatomical right because it appears on your right?

Reveal the idea

No. Anatomical left stays attached to the figure; only its position in the observer’s view is on the right. Keep the subject’s coordinate frame separate from the observer’s.

Keep anatomical directions attached to the subject →Review 1 linked cards →

Your 14-day foundation plan

Suggested time estimates are not calibrated with learners. Repeat difficult tasks and use the provider's broader syllabus to plan further preparation.

DAY 1 · 30 MINUTES

Set your scope,then identify the main idea

  • 10 min: Read #hesi-a2-section-01. Create a program-requirements log distinguishing confirmed instructions from unknown sections, timing, calculator and score rules. Unknowns remain unknown;do not fill them from a national assumption.
  • 10 min: Attempt local question #hesi-a2-pilot-q01 with its answer hidden. Explain the selected conclusion and why the nearest alternative fails.
  • 10 min: Retrieve #hesi-a2-pilot-card01. Finish with one corrected explanation in an error log. If the condition is missing, reread the source-linked section and repair that sentence before moving on.
Set your scope,then identify the main idea →Practice 1 linked questions →Review 1 linked cards →
DAY 2 · 30 MINUTES

Limit an inference to the evidence given

  • 10 min: Read local section #hesi-a2-section-02 and work its example without the conclusion visible. Write the named base, reference frame or condition that decides the example.
  • 10 min: Attempt local question #hesi-a2-pilot-q02 with its answer hidden. Explain the selected conclusion and why the nearest alternative fails.
  • 10 min: Retrieve #hesi-a2-pilot-card02. Finish with one corrected explanation in an error log. If the condition is missing, reread the source-linked section and repair that sentence before moving on.
Limit an inference to the evidence given →Practice 1 linked questions →Review 1 linked cards →
DAY 3 · 30 MINUTES

Recover word meaning from its local context

  • 10 min: Read local section #hesi-a2-section-03 and work its example without the conclusion visible. Write the named base, reference frame or condition that decides the example.
  • 10 min: Attempt local question #hesi-a2-pilot-q03 with its answer hidden. Explain the selected conclusion and why the nearest alternative fails.
  • 10 min: Retrieve #hesi-a2-pilot-card03. Finish with one corrected explanation in an error log. If the condition is missing, reread the source-linked section and repair that sentence before moving on.
Recover word meaning from its local context →Practice 1 linked questions →Review 1 linked cards →
DAY 4 · 30 MINUTES

Preserve grammatical form across a list

  • 10 min: Read local section #hesi-a2-section-04 and work its example without the conclusion visible. Write the named base, reference frame or condition that decides the example.
  • 10 min: Attempt local question #hesi-a2-pilot-q04 with its answer hidden. Explain the selected conclusion and why the nearest alternative fails.
  • 10 min: Retrieve #hesi-a2-pilot-card04, #hesi-a2-pilot-card01. Finish with one corrected explanation in an error log. If the condition is missing, reread the source-linked section and repair that sentence before moving on.
Preserve grammatical form across a list →Practice 1 linked questions →Review 2 linked cards →
DAY 5 · 30 MINUTES

Track which quantity a fraction acts on

  • 10 min: Read local section #hesi-a2-section-05 and work its example without the conclusion visible. Write the named base, reference frame or condition that decides the example.
  • 10 min: Attempt local question #hesi-a2-pilot-q05 with its answer hidden. Explain the selected conclusion and why the nearest alternative fails.
  • 10 min: Retrieve #hesi-a2-pilot-card05, #hesi-a2-pilot-card02. Finish with one corrected explanation in an error log. If the condition is missing, reread the source-linked section and repair that sentence before moving on.
Track which quantity a fraction acts on →Practice 1 linked questions →Review 2 linked cards →
DAY 6 · 30 MINUTES

Reverse a percentage change in the correct order

  • 10 min: Read local section #hesi-a2-section-06 and work its example without the conclusion visible. Write the named base, reference frame or condition that decides the example.
  • 10 min: Attempt local question #hesi-a2-pilot-q06 with its answer hidden. Explain the selected conclusion and why the nearest alternative fails.
  • 10 min: Retrieve #hesi-a2-pilot-card06, #hesi-a2-pilot-card03. Finish with one corrected explanation in an error log. If the condition is missing, reread the source-linked section and repair that sentence before moving on.
Reverse a percentage change in the correct order →Practice 1 linked questions →Review 2 linked cards →
DAY 7 · 30 MINUTES

Use both a ratio and a geometric constraint

  • 10 min: Read local section #hesi-a2-section-07 and work its example without the conclusion visible. Write the named base, reference frame or condition that decides the example.
  • 10 min: Attempt local question #hesi-a2-pilot-q07 with its answer hidden. Explain the selected conclusion and why the nearest alternative fails.
  • 10 min: Retrieve #hesi-a2-pilot-card07, #hesi-a2-pilot-card04. Finish with one corrected explanation in an error log. If the condition is missing, reread the source-linked section and repair that sentence before moving on.
Use both a ratio and a geometric constraint →Practice 1 linked questions →Review 2 linked cards →
DAY 8 · 30 MINUTES

Separate proton identity,nuclear mass count and charge

  • 10 min: Read local section #hesi-a2-section-08 and work its example without the conclusion visible. Write the named base, reference frame or condition that decides the example.
  • 10 min: Attempt local question #hesi-a2-pilot-q08 with its answer hidden. Explain the selected conclusion and why the nearest alternative fails.
  • 10 min: Retrieve #hesi-a2-pilot-card08, #hesi-a2-pilot-card05. Finish with one corrected explanation in an error log. If the condition is missing, reread the source-linked section and repair that sentence before moving on.
Separate proton identity,nuclear mass count and charge →Practice 1 linked questions →Review 2 linked cards →
DAY 9 · 30 MINUTES

Balance coefficients without changing the species

  • 10 min: Read local section #hesi-a2-section-09 and work its example without the conclusion visible. Write the named base, reference frame or condition that decides the example.
  • 10 min: Attempt local question #hesi-a2-pilot-q09 with its answer hidden. Explain the selected conclusion and why the nearest alternative fails.
  • 10 min: Retrieve #hesi-a2-pilot-card09, #hesi-a2-pilot-card06. Finish with one corrected explanation in an error log. If the condition is missing, reread the source-linked section and repair that sentence before moving on.
Balance coefficients without changing the species →Practice 1 linked questions →Review 2 linked cards →
DAY 10 · 30 MINUTES

Follow newly labeled cargo through a specified pathway

  • 10 min: Read local section #hesi-a2-section-10 and work its example without the conclusion visible. Write the named base, reference frame or condition that decides the example.
  • 10 min: Attempt local question #hesi-a2-pilot-q10 with its answer hidden. Explain the selected conclusion and why the nearest alternative fails.
  • 10 min: Retrieve #hesi-a2-pilot-card10, #hesi-a2-pilot-card07. Finish with one corrected explanation in an error log. If the condition is missing, reread the source-linked section and repair that sentence before moving on.
Follow newly labeled cargo through a specified pathway →Practice 1 linked questions →Review 2 linked cards →
DAY 11 · 30 MINUTES

Count joined chromosomes and copied DNA separately

  • 10 min: Read local section #hesi-a2-section-11 and work its example without the conclusion visible. Write the named base, reference frame or condition that decides the example.
  • 10 min: Attempt local question #hesi-a2-pilot-q11 with its answer hidden. Explain the selected conclusion and why the nearest alternative fails.
  • 10 min: Retrieve #hesi-a2-pilot-card11, #hesi-a2-pilot-card08. Finish with one corrected explanation in an error log. If the condition is missing, reread the source-linked section and repair that sentence before moving on.
Count joined chromosomes and copied DNA separately →Practice 1 linked questions →Review 2 linked cards →
DAY 12 · 30 MINUTES

Keep anatomical directions attached to the subject

  • 10 min: Read local section #hesi-a2-section-12 and work its example without the conclusion visible. Write the named base, reference frame or condition that decides the example.
  • 10 min: Attempt local question #hesi-a2-pilot-q12 with its answer hidden. Explain the selected conclusion and why the nearest alternative fails.
  • 10 min: Retrieve #hesi-a2-pilot-card12, #hesi-a2-pilot-card09. Finish with one corrected explanation in an error log. If the condition is missing, reread the source-linked section and repair that sentence before moving on.
Keep anatomical directions attached to the subject →Practice 1 linked questions →Review 2 linked cards →
DAY 13 · 30 MINUTES

Review evidence and repair remaining gaps—part1

  • 10 min: Reattempt the listed already-seen pilot questions with explanations hidden. Produce a row for each:decisive fact, chosen method, and a rejected alternative. This is review, not an unseen calibrated post-test.
  • 10 min: Retrieve all listed cards. Mark a response incomplete when it omits the deciding condition, and rewrite the response using the relevant local section.
  • 10 min: Compare the error log with your confirmed program requirements. Write one specific next-study task per unresolved skill;when an explanation is missing, repair it rather than claiming readiness. Planned minutes are editorial estimates, not tested learner outcomes.
Set your scope,then identify the main idea →Limit an inference to the evidence given →Recover word meaning from its local context →Preserve grammatical form across a list →Track which quantity a fraction acts on →Reverse a percentage change in the correct order →Practice 6 linked questions →Review 6 linked cards →
DAY 14 · 30 MINUTES

Review evidence and repair remaining gaps—part2

  • 10 min: Reattempt the listed already-seen pilot questions with explanations hidden. Produce a row for each:decisive fact, chosen method, and a rejected alternative. This is review, not an unseen calibrated post-test.
  • 10 min: Retrieve all listed cards. Mark a response incomplete when it omits the deciding condition, and rewrite the response using the relevant local section.
  • 10 min: Compare the error log with your confirmed program requirements. Write one specific next-study task per unresolved skill;when an explanation is missing, repair it rather than claiming readiness. Planned minutes are editorial estimates, not tested learner outcomes.
Use both a ratio and a geometric constraint →Separate proton identity,nuclear mass count and charge →Balance coefficients without changing the species →Follow newly labeled cargo through a specified pathway →Count joined chromosomes and copied DNA separately →Keep anatomical directions attached to the subject →Practice 6 linked questions →Review 6 linked cards →

Sources and review

Original OpenExam teaching and cases, checked against saved references on 2026-10-28. References support concepts; no official test items are reproduced. Requirements can change: confirm them with the provider and your institution.