TheoryHESI A2 Study Guide
Study for the HESI A2 with exam topics, practice questions, a free PDF, video walkthrough and timed mock exam links.
How to study for HESI A2
- Read the topic list so you know what the exam is likely to cover.
- Answer the free practice questions and read every explanation.
- Download the PDF for offline review.
- Use timed mock exams when your untimed practice feels comfortable.
Topics to review
- Safe and effective care environment
- Health promotion and maintenance
- Psychosocial and physiological integrity
- Pharmacology, infection control and patient safety
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Q1What is the average of the given expenditures, which are $79.84, $278.99, $342.16, $466.25, $111.39, $502.47, and $98.12?
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✓ Correct answer: $268.46
To calculate the average, we add up all the expenditures and divide the sum by the number of expenditures.<br/><br/>Sum of the given expenditures = $79.84 + $278.99 + $342.16 + $466.25 + $111.39 + $502.47 + $98.12 = $1879.22<br/><br/>Number of expenditures = 7<br/><br/>Average = Sum of expenditures / Number of expenditures = $1879.22 / 7 = $268.46<br/><br/>Therefore, the correct answer is B) $268.46.<br/><br/>Analysis of the wrong answer choices:<br/><br/>A) $278.99 - This is one of the given expenditures, so it is not the average.<br/><br/>C) $354.22 - This is not the correct average of the given expenditures.<br/><br/>D) $317.54 - This is not the correct average of the given expenditures.<br/><br/>The wrong answer choices (A, C, and D) do not accurately represent the average of the given expenditures.
Q2Max planted 35 tomato plants. If 20% of Max's tomato plants died as a result of harsh weather conditions, how many plants died?
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Q3Which number is represented by the Roman numeral XXVII?
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✓ Correct answer: 27
In Roman numerals, an “X” represents the number 10, a “V” represents 5, and “I” is representative of the number 1. In this problem we have 2 X’s, 1 V, and two II’s, which means we have two 10’s (20), one 5, and two 1’s (2). Written mathematically, 20 + 5 + 2 = 27.
Q4A store is pricing four lamps of different styles. Each one will be marked up differently. The cost of each lamp to the store and the desired markups are: Lamp 1 ($60) will be marked up 15% Lamp 2 ($80) will be marked up 20% Lamp 3 ($110) will be marked up 25% Lamp 4 ($150) will be marked up 30% The total price for all four lamps once they are marked up is which of the following?
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✓ Correct answer: $497.50
The total sales price of the four lamps will be $497.50.<br/><br/>Lamp 1 ($60) will be marked up 15% ($9) = sales price of $69<br/><br/>Lamp 2 ($80) will be marked up 20% ($16) = sales price of $96<br/><br/>Lamp 3 ($110) will be marked up 25% ($27.50) = sales price of $137.50<br/><br/>Lamp 4 ($150) will be marked up 30% ($45) = sales price of $195<br/><br/>Total sales price is $69 + $96 + $137.50 + $195 = $497.50.
Q5The adductor muscle serves to <code>________</code>, whereas the abductor muscle serves to <code>________</code>.
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✓ Correct answer: pull a body part toward the body’s midline; pull a body part away from the body’s midline
<em>Adductor</em> muscles are those that move a body part <em>toward</em> the body’s midline. This can be remembered by learning that the prefix <em>ad</em>- means <em>to</em> or <em>toward</em>. Contrastingly, <em>abductor</em> muscles are those that move a body part <em>away from</em> the body’s midline. This can be remembered by learning that the prefix <em>ab</em>- means <em>away from</em>.
Q6During which stage of cell division do chromosomes align their centromeres?
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✓ Correct answer: Metaphase
Mitosis is the process of cell division. Metaphase is the second stage of mitosis. During this stage, chromosomes align their centromeres at the midpoint. Prophase (choice A) is the first stage of cell division. Anaphase (choice C) is the fourth phase of mitosis where each pair of chromosomes is separated into two identical and independent chromosomes.
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