Question 1

Which of the following is a monosaccharide commonly found in the human diet, and what is its primary function?

Accepted Answer

Glucose; serves as a quick source of energy for cells

Question 2

Which equation correctly represents the formation of a triglyceride from glycerol and fatty acids?

Accepted Answer

$$\mathrm{Glycerol} + 3\ \mathrm{Fatty\ Acids} \rightarrow \mathrm{Triglyceride} + 3\ \mathrm{H_2O}$$

Question 3

Which of the following statements best describes the difference between saturated and unsaturated fatty acids?

Accepted Answer

Unsaturated fatty acids have one or more double bonds, making them liquid at room temperature.

Question 4

After absorption in the small intestine, which carrier is responsible for transporting long-chain fatty acids through the lymphatic system?

Accepted Answer

Chylomicrons

Question 5

Which process describes the breakdown of proteins into amino acids in the stomach, and which enzyme is primarily responsible?

Accepted Answer

Hydrolysis; pepsin

Question 6

Which of the following is a complementary protein pairing that provides all essential amino acids in a vegetarian diet?

Accepted Answer

Rice and beans

Question 7

What is the main function of bile in the digestive process?

Accepted Answer

Emulsifies fats to aid in their digestion and absorption

Question 8

Which equation represents the hydrolysis of a disaccharide such as sucrose?

Accepted Answer

$$\mathrm{Sucrose} + \mathrm{H_2O} \rightarrow \mathrm{Glucose} + \mathrm{Fructose}$$

Question 9

Which of the following best explains the role of insulin in carbohydrate metabolism?

Accepted Answer

Insulin stimulates the uptake of glucose by cells, lowering blood glucose levels.

Question 10

A patient is diagnosed with marasmus. Which dietary deficiency is most likely responsible for this condition?

Accepted Answer

Deficiency of both protein and calories

Question 11

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

Accepted Answer

Catalyzing biochemical reactions as enzymes

Question 12

Which equation represents the peptide bond formation between two amino acids?

Accepted Answer

$$\mathrm{Amino\ Acid}_1 + \mathrm{Amino\ Acid}_2 \rightarrow \mathrm{Dipeptide} + \mathrm{H_2O}$$

Question 13

Which of the following dietary parameters is most strongly advocated for heart health?

Accepted Answer

Increasing intake of soluble fiber and reducing saturated fat

Question 14

Which of the following is a polysaccharide stored in the liver and muscle tissues, and what is its primary function?

Accepted Answer

Glycogen; serves as a storage form of glucose

Question 15

Which type of lipoprotein is considered 'good cholesterol' and helps remove cholesterol from the bloodstream?

Accepted Answer

HDL (High-Density Lipoprotein)

Question 16

Which of the following best describes the process of denaturation in proteins?

Accepted Answer

Loss of protein's three-dimensional structure due to heat or chemicals

Question 17

Which equation represents the general formula for a saturated fatty acid?

Accepted Answer

$$\mathrm{C}_n\mathrm{H}_{2n+1}\mathrm{COOH}$$

Question 18

Which of the following is a brush border enzyme involved in carbohydrate digestion in the small intestine?

Accepted Answer

Maltase

Question 19

Which of the following best describes the relationship between fructose and insulin?

Accepted Answer

Fructose does not stimulate insulin secretion as strongly as glucose does.

Introduction to Nutrition : Carbohydrates, Fats, and Proteins Study Guide

Study Guide - Practice Questions