Question 1

Which of the following best describes the principle of homeostasis in the human body?

Accepted Answer

A) The maintenance of a stable internal environment despite external changes.

Question 2

A patient is experiencing a rapid drop in blood glucose levels. Which feedback mechanism is most likely to be activated to restore balance?

Accepted Answer

C) Negative feedback, increasing glucagon secretion.

Question 3

Which of the following is the correct order of structural organization in the human body from simplest to most complex?

Accepted Answer

B) Molecules → Cells → Tissues → Organs → Organ systems

Question 4

A solution has a pH of 2. Which of the following best describes this solution?

Accepted Answer

D) Strongly acidic

Question 5

Which of the following is an example of a positive feedback mechanism in the human body?

Accepted Answer

B) Blood clotting after a vessel injury

Question 6

Which type of chemical bond involves the sharing of electron pairs between atoms?

Accepted Answer

C) Covalent bond

Question 7

A man weighs 175 pounds on Earth. According to the study materials, what would happen to his weight on the moon, and why?

Accepted Answer

B) His weight would decrease because gravity is weaker on the moon.

Question 8

Which of the following best describes the function of serous membranes in the body?

Accepted Answer

B) To decrease friction between moving organs.

Question 9

Which of the following is NOT a characteristic of the anatomical position?

Accepted Answer

C) Palms turned posteriorly

Question 10

A chemical reaction in which bonds are broken is usually associated with ________.

Accepted Answer

A) the release of energy

Question 11

Which of the following best describes an electrolyte?

Accepted Answer

B) A substance that forms ions in solution and conducts electricity.

Question 12

Which of the following is a function of the nervous system?

Accepted Answer

B) Responding to environmental changes by transmitting electrical impulses.

Question 13

Which of the following is the correct formula for carbon dioxide?

Accepted Answer

B) $$CO_2$$

Question 14

A solution in which the solute particles do not settle out and scatter light is best described as a ________.

Accepted Answer

B) colloid

Question 15

Which of the following is a property of water that makes it vital for life?

Accepted Answer

B) It has a high heat capacity, helping to stabilize body temperature.

Question 16

Which of the following best describes the anatomical term 'proximal'?

Accepted Answer

B) Closer to the origin of a body part

Question 17

Which of the following is a correct statement about enzymes?

Accepted Answer

B) Enzymes lower the activation energy needed for a reaction.

Question 18

A patient is unable to synthesize thyroid hormone. As a result, their TSH (thyroid-stimulating hormone) levels remain high, causing thyroid gland enlargement. This is an example of:

Accepted Answer

C) Loss of negative feedback

Question 19

Which of the following best describes the function of buffers in the human body?

Accepted Answer

B) Buffers help maintain pH by releasing or binding hydrogen ions.

Question 20

Which of the following is the best definition of histology?

Accepted Answer

B) The study of tissues

Anatomy & Physiology: Foundations of the Human Body and Chemistry

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