Question 1

Which of the following best describes the principle of complementarity of structure and function in anatomy and physiology?

Accepted Answer

What a structure can do depends on its specific form; the anatomy of a body part enables its physiological function.

Question 2

A patient has damage to their muscular system. Which of the following functions would MOST likely be impaired?

Accepted Answer

Producing movement and maintaining posture.

Question 3

Which organ system is primarily responsible for regulating water, electrolytes, and acid-base balance of the blood?

Accepted Answer

Urinary system

Question 4

Homeostasis is maintained by negative feedback mechanisms. Which of the following best describes a negative feedback loop?

Accepted Answer

The response reduces or shuts off the original stimulus, helping to maintain stability.

Question 5

Which of the following is NOT a necessary life function for humans?

Accepted Answer

Photosynthesis

Question 6

A chemical element is defined as a substance that:

Accepted Answer

Is composed of identical particles called atoms.

Question 7

Which of the following correctly matches the subatomic particle with its charge and location?

Accepted Answer

Neutron: no charge, located in the nucleus

Question 8

The atomic number of an element is equal to:

Accepted Answer

The number of protons in the nucleus

Question 9

Which of the following best explains why water molecules are attracted to each other?

Accepted Answer

Hydrogen bonds form between the slightly positive hydrogen atom of one water molecule and the slightly negative oxygen atom of another.

Question 10

A solution is defined as:

Accepted Answer

A homogeneous mixture of two or more substances in which the solute is dissolved in the solvent.

Question 11

According to the octet rule, the maximum number of electrons that can occupy the valence shell of most atoms is:

Accepted Answer

$$8$$

Question 12

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

Accepted Answer

Blood clotting after injury

Question 13

Which of the following best describes a covalent bond?

Accepted Answer

A bond formed by the sharing of one or more pairs of electrons between atoms.

Question 14

A chemical equation is balanced when:

Accepted Answer

The number and type of atoms are the same on both sides of the equation.

Question 15

Which of the following is a synthesis reaction?

Accepted Answer

$$A + B \rightarrow AB$$

Question 16

If an atom has 11 protons, 12 neutrons, and 11 electrons, what is its atomic number and mass number?

Accepted Answer

Atomic number $$= 11$$, mass number $$= 23$$

Question 17

Which of the following is a requirement for life that is directly involved in chemical reactions that release energy from food?

Accepted Answer

Oxygen

Question 18

A patient is unable to maintain a stable internal environment despite changes in external temperature. Which process is MOST likely impaired?

Accepted Answer

Homeostasis

Question 19

Which organ system is responsible for producing hormones that regulate processes such as growth, reproduction, and metabolism?

Accepted Answer

Endocrine system

Question 20

Which of the following statements about isotopes is TRUE?

Accepted Answer

Isotopes of an element have the same number of protons but different numbers of neutrons.

Anatomy & Physiology Foundations: Organization, Chemistry, and Cellular Structure

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