Question 1

Which of the following statements best describes the difference between macronutrients and micronutrients?

Accepted Answer

Macronutrients are required in large amounts and include carbohydrates, fats, and proteins, while micronutrients are needed in small amounts and include vitamins and minerals.

Question 2

Which equation correctly represents the overall process of cellular respiration?

Accepted Answer

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

Question 3

A patient with type 1 diabetes is unable to absorb glucose efficiently. Which metabolic pathway is most likely to be upregulated in this patient to provide energy?

Accepted Answer

Lipolysis

Question 4

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

Accepted Answer

Linoleic acid

Question 5

Which hormone is primarily responsible for stimulating glycogenolysis during the postabsorptive state?

Accepted Answer

Glucagon

Question 6

A person consumes a meal high in carbohydrates. Which of the following processes will be most active immediately after the meal?

Accepted Answer

Glycogenesis

Question 7

Which of the following best explains why dietary fiber is important for digestive health?

Accepted Answer

It absorbs water, softens stool, increases bulk, and stimulates peristalsis.

Question 8

Which of the following lipoproteins is responsible for transporting cholesterol from the tissues to the liver for elimination?

Accepted Answer

HDL (High-Density Lipoprotein)

Question 9

A diet that is excessively high in saturated fats is most likely to increase the risk of which of the following conditions?

Accepted Answer

Atherosclerosis

Question 10

Which of the following statements about protein metabolism is correct?

Accepted Answer

Amino acids must be deaminated before they can be used as fuel, producing ammonia that is converted to urea.

Question 11

Which of the following is a function of minerals in the human body?

Accepted Answer

They act as cofactors for enzymes and are essential for nerve and muscle function.

Question 12

Which of the following best describes the role of insulin in the absorptive state?

Accepted Answer

It increases cellular uptake of glucose and stimulates glycolysis, glycogenesis, lipogenesis, and protein synthesis.

Question 13

A patient is found to have a total blood cholesterol concentration of 250 mg/dL. Which of the following recommendations would be most appropriate?

Accepted Answer

Increase exercise, avoid saturated fats, and reduce dietary cholesterol.

Question 14

Which of the following statements about basal metabolic rate (BMR) is correct?

Accepted Answer

BMR is the amount of energy used by the body at rest, awake, fasting, and at a comfortable room temperature.

Question 15

Which of the following best explains why combining beans and rice provides a complete protein source?

Accepted Answer

Together, they supply all essential amino acids in the right proportions needed for protein synthesis.

Question 16

Which hormone is secreted by adipocytes in proportion to body fat stores and acts to decrease appetite?

Accepted Answer

Leptin

Question 17

Which of the following best describes the function of chylomicrons?

Accepted Answer

They transport dietary triglycerides from the small intestine to the bloodstream via the lymphatic system.

Question 18

A person has not eaten for 12 hours. Which metabolic process is most likely providing glucose for the brain?

Accepted Answer

Gluconeogenesis

Question 19

Which of the following is a water-soluble vitamin that must be consumed regularly in the diet because it is not stored in significant amounts?

Accepted Answer

Vitamin C

Question 20

Which of the following best explains why the typical American diet increases the risk of chronic diseases such as diabetes and heart disease?

Accepted Answer

It is high in saturated fats and simple sugars, which contribute to obesity, insulin resistance, and atherosclerosis.

Chapter 24: Nutrition, Metabolism, and Energy Balance – Study Notes

Guida di studio - Domande di pratica

Study guide - Flashcard