Question 1

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

Accepted Answer

The body's ability to maintain a stable internal environment despite changes in external conditions.

Question 2

A patient is experiencing dehydration. Which feedback system is most likely activated to restore fluid balance?

Accepted Answer

Negative feedback system

Question 3

Which of the following is NOT one of the five requirements of life?

Accepted Answer

Ability to photosynthesize

Question 4

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

Accepted Answer

Superior

Question 5

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

Accepted Answer

Cardiovascular system

Question 6

A solution has a pH of 3. Which of the following statements is correct?

Accepted Answer

The solution is acidic and has a high concentration of $\mathrm{H^+}$ ions.

Question 7

Which of the following best explains the difference between a molecule and a compound?

Accepted Answer

A molecule is formed when two or more atoms bond together, while a compound is a molecule that contains atoms of different elements.

Question 8

Which of the following is a major class of macromolecules that serves as the main source of energy for cells?

Accepted Answer

Carbohydrates

Question 9

Which chemical reaction is responsible for breaking down large molecules into smaller ones, releasing energy in the process?

Accepted Answer

Catabolic reaction

Question 10

Which of the following statements about DNA and RNA is correct?

Accepted Answer

DNA contains the sugar deoxyribose, while RNA contains the sugar ribose.

Question 11

Which of the following is a complementary base pair in DNA?

Accepted Answer

Adenine and Thymine

Question 12

A cell is placed in a hypotonic solution. What will most likely happen to the cell?

Accepted Answer

It will swell as water enters the cell.

Question 13

Which organelle is responsible for producing ATP, the energy currency of the cell?

Accepted Answer

Mitochondria

Question 14

Which of the following best describes semiconservative replication of DNA?

Accepted Answer

Each new DNA molecule consists of one original strand and one newly synthesized strand.

Question 15

Which of the following is a function of the Golgi apparatus?

Accepted Answer

Modifying, sorting, and packaging proteins for secretion

Question 16

Which of the following is true about isotopes?

Accepted Answer

Isotopes are atoms of the same element with different numbers of neutrons.

Question 17

Which of the following is a major function of proteins in the plasma membrane?

Accepted Answer

Transporting substances across the membrane

Question 18

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

Accepted Answer

ATP provides energy for cellular processes.

Question 19

Which of the following is a correct statement about exons and introns?

Accepted Answer

Exons are coding regions of a gene, while introns are non-coding regions.

Question 20

Which of the following equations correctly represents the dissociation of water?

Accepted Answer

$\mathrm{H_2O} \rightarrow \mathrm{H^+} + \mathrm{OH^-}$

Comprehensive Study Guide: Foundations of Anatomy & Physiology

Study Guide - Practice Questions