Question 1

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

Accepted Answer

Catabolic reactions release energy by breaking down complex molecules, and this energy (in the form of ATP) is used to drive anabolic reactions that build complex molecules.

Question 2

Which of the following is NOT a fate of glucose in the human body?

Accepted Answer

Direct conversion into essential amino acids

Question 3

During aerobic cellular respiration, what is the correct overall chemical equation for the oxidation of glucose?

Accepted Answer

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

Question 4

Which process is stimulated by insulin and results in the storage of glucose as glycogen in the liver and skeletal muscle?

Accepted Answer

Glycogenesis

Question 5

A patient is fasting and their body begins to break down fatty acids for energy. Which metabolic process is primarily responsible for this?

Accepted Answer

Lipolysis

Question 6

Which of the following statements about ATP is TRUE?

Accepted Answer

ATP is produced during cellular respiration and is constantly recycled within cells.

Question 7

Which class of lipoprotein is responsible for transporting cholesterol from body cells to the liver for elimination, and is considered 'good cholesterol'?

Accepted Answer

HDL (High Density Lipoprotein)

Question 8

Which of the following is an essential amino acid that must be obtained from the diet because the human body cannot synthesize it?

Accepted Answer

Leucine

Question 9

A person consumes a meal high in carbohydrates. Which hormone is primarily responsible for stimulating the conversion of glucose to glycogen in the liver?

Accepted Answer

Insulin

Question 10

Which metabolic pathway allows the body to produce glucose from non-carbohydrate sources such as amino acids and glycerol?

Accepted Answer

Gluconeogenesis

Question 11

Which of the following best explains why most of the energy released during catabolic reactions is not used for ATP synthesis?

Accepted Answer

The energy is lost as waste heat, which helps maintain body temperature.

Question 12

Which of the following is a correct sequence of events in aerobic cellular respiration?

Accepted Answer

Glycolysis → Formation of acetyl CoA → Krebs cycle → Electron transport chain

Question 13

A patient has a blood test showing LDL cholesterol levels of 160 mg/dl. According to the study materials, what is the clinical significance of this finding?

Accepted Answer

This LDL level is above the recommended maximum and may increase risk for cardiovascular disease.

Question 14

Which of the following is a function of proteins synthesized from amino acids in the body?

Accepted Answer

They function as enzymes, antibodies, and structural elements.

Question 15

Which process describes the breakdown of glycogen to glucose, and which hormone stimulates this process?

Accepted Answer

Glycogenolysis; stimulated by glucagon

Question 16

Which of the following statements about creatine phosphate (CrP) in skeletal muscle is TRUE?

Accepted Answer

Creatine phosphate provides a rapid source of energy for ATP synthesis during short bursts of intense muscle activity.

Question 17

Which of the following is a correct description of the role of the electron transport chain in cellular respiration?

Accepted Answer

It uses energy from electrons to pump hydrogen ions across the mitochondrial membrane, generating ATP.

Question 18

Which of the following is a real-life example of gluconeogenesis?

Accepted Answer

A person fasting for 24 hours converts amino acids from muscle protein into glucose to maintain blood sugar.

Question 19

Which of the following is NOT a function of lipids in the body?

Accepted Answer

Serving as the main source of amino acids for protein synthesis

Question 20

Which of the following best explains why essential amino acids must be included in the diet?

Accepted Answer

They cannot be synthesized by the human body and are required for protein synthesis.

Metabolism and Nutrition: An Overview for ANP College Students

Study Guide - Practice Questions

Study Guide - Flashcards