$$\text{pH} = -\log_{10} [\text{H}^+]$$

Question 1

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

Accepted Answer

Anatomy focuses on the structure of body parts, while physiology examines how those parts work.

Question 2

Which of the following is the correct sequence for the levels of organization in the human body, from simplest to most complex?

Accepted Answer

Molecule, cell, tissue, organ, organ system, organism

Question 3

A patient is experiencing rapid blood loss. Which homeostatic mechanism is most likely to be activated to restore blood pressure?

Accepted Answer

Negative feedback loop

Question 4

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

Accepted Answer

Blood clotting after injury

Question 5

Which directional term describes a structure that is closer to the head than another structure?

Accepted Answer

Superior

Question 6

Which organ system is primarily responsible for transporting nutrients, gases, and wastes throughout the body?

Accepted Answer

Circulatory system

Question 7

Which of the following statements about atomic structure is correct?

Accepted Answer

Protons and neutrons are found in the nucleus, while electrons orbit around the nucleus.

Question 8

Which of the following best describes a cation?

Accepted Answer

An atom that has lost electrons and has a positive charge

Question 9

A patient is given intravenous potassium chloride. Which statement about sodium and potassium distribution is correct?

Accepted Answer

Sodium is primarily found outside cells, while potassium is primarily found inside cells.

Question 10

Which equation correctly represents the relationship between hydrogen ion concentration and pH?

Accepted Answer

$$	ext{pH} = -\log_{10} [	ext{H}^+]$$

Question 11

Which of the following is an example of an exergonic reaction in the human body?

Accepted Answer

Hydrolysis of ATP to ADP and phosphate

Question 12

Which chemical bond is formed when electrons are transferred from one atom to another?

Accepted Answer

Ionic bond

Question 13

Which of the following best describes the function of enzymes in metabolic pathways?

Accepted Answer

Enzymes decrease the activation energy, speeding up reactions.

Question 14

A solution contains 0.1 M NaCl. Which statement is true regarding its components?

Accepted Answer

NaCl is the solute, water is the solvent.

Question 15

Which of the following is a property of hydrophobic compounds?

Accepted Answer

They repel water and do not dissolve in it.

Question 16

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

Accepted Answer

Buffers maintain pH by neutralizing excess acids or bases.

Question 17

Which macromolecule is primarily responsible for storing genetic information?

Accepted Answer

Nucleic acids

Question 18

Which process is described by the equation $$	ext{C}_6	ext{H}_{12}	ext{O}_6 + 6	ext{O}_2 ightarrow 6	ext{CO}_2 + 6	ext{H}_2	ext{O} + 	ext{energy}$$?

Accepted Answer

Cellular respiration (catabolic reaction)

Question 19

Which of the following statements about ATP is correct?

Accepted Answer

ATP stores energy in its phosphate bonds and releases it when hydrolyzed.

Question 20

A protein is exposed to high heat and loses its three-dimensional structure. This process is called:

Accepted Answer

Denaturation

Introduction to Anatomy & Physiology and The Chemistry of Life: Study Notes

Study Guide - Practice Questions