Energy Metabolism questions

Question: Type IIa muscle fibers:

Answer Choices:
Are slow-twitch, Are red and fatigue-resistant, Are fast-twitch red fibers, Only use aerobic metabolism

Answer: Are known as fast-twitch red fibers

Question: A type I muscle fiber:

Answer Choices:
Contracts quickly, Fatigues easily, Is red and slow-twitch, Is white and fast-twitch

Answer: Is called a slow-twitch red fiber

Question: Which activity is primarily fueled by the lactic acid energy system?

Answer Choices:
Long-distance swimming, 400-meter run, Resting metabolism, Marathon running

Answer: 400-meter run

Question: The oxygen system:

Answer Choices:
Requires no oxygen, Produces ATP in small quantities, Produces ATP in large quantities using oxygen, Works only at rest

Answer: Produces ATP in rather large quantities from other energy sources in the body

Question: Catabolism is:

Answer Choices:
Building complex molecules; Breaking down complex molecules; Glucose synthesis; Energy storage

Answer: The breakdown of muscle glycogen into muscle glucose

Question: The largest component of energy expenditure is:

Answer Choices:
Physical activity, Digestion, Thermoregulation, Basal metabolism

Answer: Basal metabolism

Question: Which of the following is NOT considered a cause of fatigue during exercise?

Answer Choices:
Dehydration, Depletion of muscle glycogen, Increased blood volume, Electrolyte imbalance

Answer: Increased blood volume

Question: In humans, the majority of glucose is ______.

Answer Choices:
Circulating in the blood, Stored in the liver, Excreted in urine, Stored in the muscles as glycogen

Answer: Stored in the muscles as glycogen

Question: As you perform mild to moderate exercise (up to 50% of your VO₂ max), you will use ______ to fuel that activity.

Answer Choices:
protein and amino acids, ketones, primarily blood glucose and fat, creatine phosphate

Answer: primarily blood glucose and fat

Question: Which of the following statements about the resting metabolic rate (RMR) is FALSE?

Answer Choices:
It decreases with age, It is influenced by muscle mass, It’s higher in men than women, It is lower than the metabolic rate when sleeping

Answer: It is lower than the metabolic rate when sleeping

Question: Which of the following statements about the lactic acid energy system is FALSE?

Answer Choices:
Produces ATP rapidly, Operates without oxygen, Supports high-intensity effort, Requires oxygen

Answer: Requires oxygen

Question: The immediate source of energy for all body processes is:

Answer Choices:
Fat, Glucose, Protein, ATP (adenosine triphosphate)

Answer: ATP (adenosine triphosphate)