Q: Which equation best represents the calculation for the minimum daily protein requirement for an adult based on body weight?

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

Question 1

According to the Recommended Dietary Allowance (RDA), what is the minimum amount of protein required per kilogram of body weight per day for most adults?

Accepted Answer

$$0.8$$ grams per kilogram$

Question 2

A competitive athlete is recovering from an injury and is found to be in a state of positive nitrogen balance. What does this indicate about their body's protein metabolism?

Accepted Answer

The body is gaining nitrogen because it is building new proteins for tissue repair.

Question 3

Which process allows the body to efficiently produce nonessential amino acids by transferring an amino group from one molecule to another?

Accepted Answer

Transamination

Question 4

How many of the 20 amino acids used to build human proteins are considered essential in our diet?

Accepted Answer

$$9$$

Question 5

Which of the following statements about protein quality is true?

Accepted Answer

A protein that contains all 9 essential amino acids in adequate amounts is considered high quality.

Question 6

Which of the following foods is NOT a nutrient-dense source of protein?

Accepted Answer

Refined grains

Question 7

A vegetarian diet is primarily focused on which type of foods?

Accepted Answer

Plant-based foods

Question 8

Which nutrient challenge is most likely to occur in a vegan diet and what is a recommended plant-based source to address it?

Accepted Answer

Vitamin B12 deficiency; consume fortified cereals

Question 9

Which of the following is a disadvantage to a vegan diet?

Accepted Answer

Higher risk of iron and protein deficiency

Question 10

Which foods should vegetarians prioritize to get enough protein in their diet?

Accepted Answer

Whole grains, nuts, seeds & beans

Question 11

Which equation best represents the calculation for the minimum daily protein requirement for an adult based on body weight?

Accepted Answer

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

Question 12

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

Accepted Answer

An individual experiencing severe illness or trauma

Question 13

Which statement best describes a limiting amino acid in a food protein?

Accepted Answer

An amino acid that is missing or in the lowest supply, limiting protein synthesis

Question 14

Which of the following is an example of mutual supplementation to improve protein quality?

Accepted Answer

Combining legumes and grains to provide all essential amino acids

Question 15

Which of the following statements regarding essential amino acids is true?

Accepted Answer

Essential amino acids must be consumed in the diet because the body cannot synthesize them.

Question 16

A 25-year-old adult bodybuilder currently training for competition is most likely to be in which state of nitrogen balance?

Accepted Answer

Positive nitrogen balance

Question 17

Which of the following is a complete protein source?

Accepted Answer

Eggs

Question 18

Which dietary guideline is recommended for Americans to improve protein intake?

Accepted Answer

Limit intake of saturated fat and sodium from protein sources

Question 19

Which of the following is a conditionally essential amino acid?

Accepted Answer

Glutamine

Question 20

If a person consumes 60 grams of protein per day and weighs 70 kg, what is their protein intake per kilogram of body weight? Use the equation $$	ext{Protein intake per kg} = \frac{	ext{Total protein (g)}}{	ext{Body weight (kg)}}.$$

Accepted Answer

$$0.86 g/kg$

Dietary Guidelines for Proteins: Structure, Function, and Quality

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