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HESI A2 anatomy and physiology practice questions, set 24

HESI A2 · anatomy and physiology

HESI A2 anatomy and physiology practice questions set 24

You name structures and functions out loud — the HESI A2 module that sinks most retakes. Five of the 15 questions include the correct answer and rationale. The other ten keep answers in the study hub. Continue with the HESI A2 exam guide or more HESI A2 practice questions.

Five anatomy and physiology questions with answers

Cover the key. Write the first action. Then open the rationale and name why the other choices fail.

Question 1

Which of these intermolecular forces might represent attraction between atoms of a noble gas?

  1. A. Dipole-dipole interaction
  2. B. London dispersion force
  3. C. Keesom interaction
  4. D. Hydrogen bonding
Show answer and rationale

Correct answer: B — London dispersion force

Noble gases are non-polar molecules without a permanent dipole moment. The only intermolecular force applicable to noble gases is the London dispersion force, also known as Van der Waals forces. This force is a temporary attractive force resulting from the formation of temporary dipoles in non-polar molecules. Dipole-dipole interactions, Keesom interactions, and hydrogen bonding involve significant dipoles or hydrogen atoms bonded to electronegative atoms, which do not apply to noble gases.

Question 2

How many amino acids are essential for human life?

  1. A. 22
  2. B. 20
  3. C. 18
  4. D. 24
Show answer and rationale

Correct answer: B — 20

There are 20 essential amino acids required for human life. These amino acids cannot be synthesized by the body and must be obtained through the diet. They play crucial roles in various physiological functions and are necessary for protein synthesis and overall health. Choice A is incorrect because there are not 22 essential amino acids. Choice C is incorrect as there are more than 18 essential amino acids. Choice D is incorrect as there are not 24 essential amino acids for human life.

Question 3

Which material has the smallest specific heat capacity?

  1. A. water
  2. B. wood
  3. C. aluminum
  4. D. glass
Show answer and rationale

Correct answer: C — aluminum

Specific heat capacity is the amount of heat required to raise the temperature of a unit mass of a substance by one degree Celsius. Among the options provided, aluminum has the smallest specific heat capacity. This means that it requires the least amount of heat to raise its temperature compared to water, wood, and glass. Water has a high specific heat capacity, making it resistant to temperature changes, while wood and glass have higher specific heat capacities compared to aluminum.

Question 4

Among the following elements, which is a nonmetal?

  1. A. Mercury
  2. B. Magnesium
  3. C. Sulfur
  4. D. Potassium
Show answer and rationale

Correct answer: C — Sulfur

Sulfur is a nonmetal as it is located on the right side of the periodic table. Nonmetals generally exhibit properties such as being brittle, poor conductors of heat and electricity, and having lower melting points compared to metals. Mercury (A), Magnesium (B), and Potassium (D) are all metals due to their metallic properties. Mercury is a liquid metal at room temperature, Magnesium is a solid metal, and Potassium is a solid metal as well. Therefore, the correct answer is C, Sulfur.

Question 5

If oxygen is in a compound, what would its oxidation number be?

  1. A. 2
  2. B. -2
  3. C. 0
  4. D. -1
Show answer and rationale

Correct answer: B — -2

Oxygen typically has an oxidation number of -2 in compounds because it tends to gain electrons. This is due to its high electronegativity, which leads to oxygen attracting electrons towards itself in a chemical bond. Choice A (2) is incorrect because oxygen doesn't have a +2 oxidation number in compounds. Choice C (0) is incorrect as oxygen rarely has an oxidation number of 0 in compounds. Choice D (-1) is incorrect as oxygen's oxidation number in compounds is typically -2, not -1.

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Ten more HESI A2 anatomy and physiology questions

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Question 6

What is the name of the device that separates gaseous ions by their mass-to-charge ratio?

  1. A. mass spectrometer
  2. B. interferometer
  3. C. magnetometer
  4. D. capacitance meter
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Question 7

Which form of fermentation is used to produce beer?

  1. A. Lactic acid fermentation
  2. B. Acetic acid fermentation
  3. C. Propionic acid fermentation
  4. D. Ethyl alcohol fermentation
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Question 8

A cell containing 12 chromosomes divides into daughter cells in mitosis. How many chromosomes are in each daughter cell?

  1. A. 3
  2. B. 6
  3. C. 12
  4. D. 24
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Question 9

Which type of blood cell is involved in clotting?

  1. A. Red blood cells
  2. B. White blood cells
  3. C. Platelets
  4. D. Plasma
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Question 10

Which type of blood vessel carries oxygenated blood away from the heart?

  1. A. Veins
  2. B. Arteries
  3. C. Capillaries
  4. D. Lymphatic vessels
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Question 11

Which, if any, of the following statements are true?

  1. A. Water boils at approximately 100°C (212°F) at standard atmospheric pressure
  2. B. The boiling point is the temperature at which the vapor pressure is higher than the atmospheric pressure around the water
  3. C. Water boils at a lower temperature in areas of lower pressure
  4. D. A and C are true
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Question 12

Which element has the chemical symbol 'Fe'?

  1. A. Lead
  2. B. Iron
  3. C. Silver
  4. D. Copper
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Question 13

What is the oxidation state of the chlorine atom in the compound HCl?

  1. A. +1
  2. B. -1
  3. C. +2
  4. D. -2
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Question 14

If 3 books cost $4, how much will 6 books cost?

  1. A. $8
  2. B. $12
  3. C. $6
  4. D. $10
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Question 15

What is a primary function of the skeletal system?

  1. A. Production of red blood cells
  2. B. Support and protection
  3. C. Secretion of hormones
  4. D. Regulation of body temperature
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About these HESI A2 anatomy and physiology questions

HESI A2 anatomy and physiology practice questions, set 24 for nursing students in the United States. Fifteen items. Five include answers and rationales in American English.

No. Nursier is independent practice. Register through the official path named on the HESI A2 exam guide.

The first five questions already include the rationale. Start full practice to unlock the remaining keys, missed-question review, and the rest of the bank.

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