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

$\mathrm{C_6H_{12}O_6} + 6\mathrm{O_2} \rightarrow 6\mathrm{CO_2} + 6\mathrm{H_2O} + 36-38\ \text{ATP}$

Question 1

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

Accepted Answer

Catabolism breaks down complex molecules to release energy, while anabolism uses energy to build complex molecules from simpler ones.

Question 2

During cellular respiration, which molecule acts as the primary energy currency linking catabolic and anabolic reactions?

Accepted Answer

ATP

Question 3

Which equation correctly represents the overall reaction for glucose catabolism 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 process is responsible for the production of lactic acid in muscle cells during intense exercise?

Accepted Answer

Fermentation

Question 5

Which of the following best explains the role of NAD$^+$ and FAD in cellular respiration?

Accepted Answer

They are coenzymes that accept electrons during oxidation-reduction reactions.

Question 6

A patient with a deficiency in insulin is likely to experience which of the following effects on blood glucose regulation?

Accepted Answer

Increased blood glucose due to reduced cellular uptake.

Question 7

Which process describes the conversion of non-carbohydrate precursors into glucose, and in which organ does this primarily occur?

Accepted Answer

Gluconeogenesis in the liver

Question 8

During the absorptive state, which hormone is primarily responsible for promoting the uptake and storage of nutrients?

Accepted Answer

Insulin

Question 9

Which of the following best describes the process of beta-oxidation?

Accepted Answer

The conversion of fatty acids into acetyl-CoA for entry into the Krebs cycle.

Question 10

Which equation represents the ATP yield from the complete aerobic oxidation of one molecule of glucose?

Accepted Answer

$\mathrm{C_6H_{12}O_6} + 6\mathrm{O_2} ightarrow 6\mathrm{CO_2} + 6\mathrm{H_2O} + 36-38\ 	ext{ATP}$

Question 11

Which process is responsible for the removal of the amino group from amino acids, and what is the primary product of this reaction?

Accepted Answer

Deamination; ammonia

Question 12

Which hormone is released by the adrenal medulla during the stress response, and what is its primary effect?

Accepted Answer

Epinephrine; increases heart rate and mobilizes energy stores

Question 13

Which of the following best describes the difference between an endocrine gland and an exocrine gland?

Accepted Answer

Endocrine glands secrete hormones directly into the bloodstream; exocrine glands secrete substances into ducts.

Question 14

A patient is experiencing hypocalcemia. Which hormone is most likely to be elevated in response?

Accepted Answer

Parathyroid hormone (PTH)

Question 15

Which process occurs in the liver and involves the breakdown of glycogen to release glucose into the blood?

Accepted Answer

Glycogenolysis

Question 16

Which of the following is a key difference between the absorptive and postabsorptive states?

Accepted Answer

The absorptive state is dominated by insulin, while the postabsorptive state is dominated by glucagon.

Question 17

Which process describes the synthesis of glucose from amino acids during prolonged fasting?

Accepted Answer

Gluconeogenesis

Question 18

Which hormone is produced by the pancreas and lowers blood glucose levels?

Accepted Answer

Insulin

Question 19

Which metabolic process is most active during starvation?

Accepted Answer

Gluconeogenesis

Question 20

Which of the following best describes the process of chemiosmosis in ATP production?

Accepted Answer

Movement of protons across the mitochondrial membrane, creating a gradient that drives ATP synthesis via ATP synthase.

Metabolism, Cellular Respiration, and Endocrine Regulation: Study Guide for Anatomy & Physiology

Study Guide - Practice Questions