Q: Which equation correctly estimates an adult's daily protein requirement in grams, given their weight in kilograms?

$$\text{Protein (g)} = \text{weight (kg)} \times 0.8$$

Question 1

Which of the following statements best describes an essential amino acid?

Accepted Answer

It must be obtained from the diet because the body cannot synthesize it in sufficient quantities.

Question 2

During protein digestion, which process occurs in the stomach to aid in breaking down protein structure?

Accepted Answer

Denaturation by hydrochloric acid

Question 3

A patient with a genetic disorder cannot convert phenylalanine to tyrosine. What is the name of this disorder, and what is a likely consequence if untreated?

Accepted Answer

Phenylketonuria (PKU); intellectual disability

Question 4

Which of the following best explains why proteins are considered high-quality?

Accepted Answer

They contain all essential amino acids in proportions needed by humans and are easily digestible.

Question 5

A vegetarian wants to ensure they are getting all essential amino acids. Which strategy is most effective?

Accepted Answer

Combine different plant protein sources, such as legumes and grains, to complement limiting amino acids.

Question 6

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

Accepted Answer

They act as enzymes to speed up chemical reactions.

Question 7

A person is in negative nitrogen balance. Which scenario best explains this condition?

Accepted Answer

A patient recovering from severe burns and losing muscle mass

Question 8

Which equation correctly estimates an adult's daily protein requirement in grams, given their weight in kilograms?

Accepted Answer

$$	ext{Protein (g)} = 	ext{weight (kg)} 	imes 0.8$$

Question 9

What is the primary reason that protein is not the preferred energy source for the body?

Accepted Answer

Protein is needed for critical structural and functional roles, and using it for energy can compromise these functions.

Question 10

Which of the following best describes the process of denaturation?

Accepted Answer

The alteration of a protein's shape by heat, acid, or other agents, resulting in loss of function

Question 11

A food has a Protein Digestibility Corrected Amino Acid Score (PDCAAS) of 1.0. What does this indicate?

Accepted Answer

It provides all essential amino acids in adequate amounts and is highly digestible.

Question 12

Which of the following is a likely consequence of a diet chronically low in protein for a growing child?

Accepted Answer

Kwashiorkor, characterized by edema, muscle loss, and skin changes

Question 13

Which step in protein synthesis involves the creation of mRNA from a DNA template?

Accepted Answer

Transcription

Question 14

A person consumes 100 grams of protein per day. If protein is 16% nitrogen by weight, how many grams of nitrogen are consumed daily?

Accepted Answer

$$100 	imes 0.16 = 16$$ grams

Question 15

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

Accepted Answer

Storing genetic information

Question 16

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

Accepted Answer

Each food provides the essential amino acids that the other lacks, complementing each other's amino acid profile.

Question 17

Which of the following scenarios would most likely result in positive nitrogen balance?

Accepted Answer

A child experiencing rapid growth

Question 18

Which of the following statements about soy protein is TRUE?

Accepted Answer

Soy protein is a high-quality, complete protein source with potential health benefits.

Question 19

Which of the following best describes the role of transfer RNA (tRNA) in protein synthesis?

Accepted Answer

It carries amino acids to the ribosome for assembly into a protein.

Question 20

A patient presents with edema, muscle wasting, and skin changes after being weaned to a low-protein cereal diet. Which condition is most likely?

Accepted Answer

Kwashiorkor

proteins (nutrition)

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