$$(\text{Weight in lbs.} \div 2.2) \times 0.8$$

Question 1

Which of the following best describes the structural difference between proteins and carbohydrates?

Accepted Answer

Proteins contain nitrogen in addition to carbon, hydrogen, and oxygen, while carbohydrates do not contain nitrogen.

Question 2

A patient is diagnosed with kwashiorkor. Which of the following symptoms would you most likely observe?

Accepted Answer

Swelling of the feet and abdomen, poor skin health, and liver malfunction.

Question 3

Which of the following is an example of a complete protein source?

Accepted Answer

Egg whites

Question 4

What is the correct sequence of events in protein synthesis?

Accepted Answer

Transcription, translation, folding

Question 5

Which equation would you use to calculate the Recommended Dietary Allowance (RDA) for protein for an adult?

Accepted Answer

$$(	ext{Weight in lbs.} \div 2.2) 	imes 0.8$$

Question 6

Which of the following best explains why proteins are more structurally complex than carbohydrates or lipids?

Accepted Answer

Proteins have up to four levels of structure, including primary, secondary, tertiary, and quaternary.

Question 7

A vegan athlete wants to ensure they consume all essential amino acids. Which strategy is most effective?

Accepted Answer

Eat complementary plant-based protein sources throughout the day.

Question 8

Which of the following is a consequence of protein denaturation in food preparation?

Accepted Answer

Loss of the protein’s functional three-dimensional structure, affecting texture.

Question 9

Which enzyme is responsible for initiating protein digestion in the stomach?

Accepted Answer

Pepsin

Question 10

A person consumes a diet where protein intake equals protein used and excreted. What is this state called?

Accepted Answer

Nitrogen balance

Question 11

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

Accepted Answer

Storing genetic information

Question 12

Which protein is most abundant in blood and plays a key role in fluid and acid-base balance?

Accepted Answer

Albumin

Question 13

Which of the following statements about protein turnover is correct?

Accepted Answer

The body continually breaks down and synthesizes proteins, recycling amino acids.

Question 14

Which of the following is a risk associated with long-term high-protein diets?

Accepted Answer

Increased risk of cardiovascular disease and diabetes

Question 15

Which of the following best describes the role of enzymes in the body?

Accepted Answer

They lower the activation energy required for chemical reactions without being consumed.

Question 16

A patient with marasmus is most likely to present with which of the following symptoms?

Accepted Answer

Severe emaciation and growth retardation

Question 17

Which of the following plant-based foods is considered a complete protein source?

Accepted Answer

Soy

Question 18

Which process describes the breaking of peptide bonds during protein digestion?

Accepted Answer

Hydrolysis

Question 19

Which of the following statements about protein supplements is supported by scientific evidence?

Accepted Answer

Protein supplements do not enhance exercise performance more than protein from foods.

Question 20

Which of the following best explains why older adults may require more protein in their diets?

Accepted Answer

To help prevent sarcopenia, the age-related decline in muscle mass and strength.

Proteins: Structure, Function, Digestion, and Dietary Importance

Study Guide - Practice Questions