$\mathrm{C_6H_{12}O_6} + 6\mathrm{O_2} \rightarrow 6\mathrm{CO_2} + 6\mathrm{H_2O} + \text{energy}$

Question 1

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

Accepted Answer

The process by which the body maintains a stable internal environment despite changes in external conditions.

Question 2

A patient is experiencing dangerously low blood glucose levels. Which type of feedback loop is most likely to be activated to restore homeostasis?

Accepted Answer

Negative feedback loop

Question 3

Which of the following equations correctly represents the metabolism of glucose during cellular respiration?

Accepted Answer

$\mathrm{C_6H_{12}O_6} + 6\mathrm{O_2} ightarrow 6\mathrm{CO_2} + 6\mathrm{H_2O} + 	ext{energy}$

Question 4

Which of the following is NOT one of the seven characteristics of life?

Accepted Answer

Ability to photosynthesize

Question 5

Which organelle is primarily responsible for ATP production in eukaryotic cells?

Accepted Answer

Mitochondrion

Question 6

Which of the following best explains why water is considered the universal solvent?

Accepted Answer

Water's polarity allows it to dissolve many ionic and polar substances.

Question 7

A cell placed in a hypertonic solution will:

Accepted Answer

Lose water and shrink due to osmosis.

Question 8

Which of the following best describes the difference between anabolism and catabolism?

Accepted Answer

Anabolism builds complex molecules from simpler ones, while catabolism breaks down complex molecules into simpler ones.

Question 9

Which of the following bonds is least likely to dissolve in water?

Accepted Answer

Nonpolar covalent bond

Question 10

Which of the following is a correct example of a dehydration synthesis reaction?

Accepted Answer

Formation of a peptide bond between two amino acids with the release of water.

Question 11

Which of the following is NOT a major macromolecule found in cells?

Accepted Answer

Electrolytes

Question 12

Which of the following statements about the sodium-potassium pump is correct?

Accepted Answer

It moves 3 sodium ions out of the cell and 2 potassium ions into the cell per ATP hydrolyzed.

Question 13

Which of the following best describes the function of ribosomes?

Accepted Answer

They synthesize proteins by translating mRNA.

Question 14

Which of the following is a correct statement about the structure of DNA?

Accepted Answer

Adenine pairs with thymine via two hydrogen bonds.

Question 15

During which phase of the cell cycle does DNA replication occur?

Accepted Answer

S phase

Question 16

Which of the following is a function of the cytoskeleton?

Accepted Answer

Providing structural support and facilitating cell movement

Question 17

Which of the following best describes the Central Dogma of Biology?

Accepted Answer

$	ext{DNA} ightarrow 	ext{RNA} ightarrow 	ext{Protein}$

Question 18

Which of the following is true regarding enzymes and reaction rates?

Accepted Answer

Enzymes lower the activation energy, increasing the rate of chemical reactions.

Question 19

Which of the following statements about active transport is correct?

Accepted Answer

Active transport requires energy to move substances against their concentration gradient.

Question 20

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

Accepted Answer

Release of oxytocin during childbirth to intensify uterine contractions.

Comprehensive Study Guide: Foundations of Anatomy & Physiology

Study Guide - Practice Questions