Question 1

Which level of structural organization is defined as a group of similar cells that work together to perform a specific function?

Accepted Answer

Tissue level

Question 2

A patient suffers a deep cut on their skin. Which organ system is primarily responsible for protecting deeper tissues from injury and synthesizing vitamin D?

Accepted Answer

Integumentary system

Question 3

Which of the following best describes negative feedback in homeostatic control mechanisms?

Accepted Answer

The output shuts off the original effect of the stimulus or reduces its intensity.

Question 4

Which organ system is responsible for eliminating nitrogenous wastes and regulating water, electrolyte, and acid-base balance of the blood?

Accepted Answer

Urinary system

Question 5

A person is running and their breathing rate increases to supply more oxygen. Which characteristic of life does this scenario best illustrate?

Accepted Answer

Responsiveness

Question 6

Which of the following is a correct example of a positive feedback mechanism?

Accepted Answer

Labor contractions during childbirth

Question 7

Which type of chemical bond involves the sharing of electrons between atoms?

Accepted Answer

Covalent bond

Question 8

A solution has a pH of 5. Which statement is true about this solution?

Accepted Answer

It is acidic and has a high concentration of hydrogen ions ($[H^+]$).

Question 9

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

Accepted Answer

Returns leaked fluid to blood and houses immune cells

Question 10

Which macromolecule is primarily responsible for storing genetic information in cells?

Accepted Answer

Nucleic acids

Question 11

A molecule of glucose ($C_6H_{12}O_6$) is broken down to release energy. What is the name of the process and the molecule that directly powers cellular reactions?

Accepted Answer

Catabolism; ATP

Question 12

Which of the following best describes the difference between anatomy and physiology?

Accepted Answer

Anatomy studies the structure of body parts, while physiology studies their function.

Question 13

Which of the following is true about water as an inorganic compound in the body?

Accepted Answer

It helps regulate body temperature by absorbing and releasing heat.

Question 14

A patient has a deficiency in calcium ions ($Ca^{2+}$). Which of the following is a possible consequence?

Accepted Answer

Impaired nerve impulse transmission

Question 15

Which of the following is a property of saturated triglycerides?

Accepted Answer

They are solid at room temperature.

Question 16

Which protein structure level is defined by the sequence of amino acids?

Accepted Answer

Primary

Question 17

Which of the following is a correct statement about enzymes?

Accepted Answer

Enzymes lower the activation energy ($E_a$) required for reactions.

Question 18

A solution contains $[H^+] = 10^{-7}$ M. What is its pH?

Accepted Answer

$pH = 7$

Question 19

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

Accepted Answer

Allows movement of body parts via skeletal muscles

Question 20

Which of the following best explains why energy conversions in the body are inefficient?

Accepted Answer

Some energy is lost as heat, which is often unusable.

Introduction to Anatomy & Physiology: Structural Organization, Organ Systems, and Basic Chemistry

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