Question 1

The human body uses amino acids to
A) synthesize certain hormones.
B) make enzymes.
C) obtain energy.
D) synthesize certain hormones, to make enzymes, and to obtain energy.

Question 2

The _____ group is not a chemical structure of all amino acids.
A) amino
B) sulfur
C) acid
D) R

Question 3

The human body contains _____ different amino acids.
A) 10
B) 20
C) 50
D) 100

Question 4

Which of the following amino acids is essential for humans?
A) leucine
B) asparagine
C) alanine
D) serine

Question 5

Which of the following contains the most protein per serving?
A) 3½ ounces low-fat cottage cheese
B) 1 plain bagel (3½″ diameter)
C) 3½ oz cooked chicken breast
D) 2 Tbsp peanut butter

Question 6

A) are naturally rich sources of the essential amino acid methionine.
B) can undergo processing for use in many food products.
C) provide high amounts of cholesterol and saturated fats.
D) should be limited in vegetarian diets.

Question 7

A _____ amino acid is an essential amino acid that is in relatively low amounts in a food.
A) negative
B) deficient
C) limiting
D) deaminated

Question 8

_____ is the limiting amino acid in legumes.
A) Phenylalanine
B) Alanine
C) Serine
D) Methionine

Question 9

The link that holds two amino acids together is called a
A) protein connector.
B) hydrogen group.
C) peptide bond.
D) None of these choices are correct.

Question 10

As a result of exposure to heat, the proteins in a raw egg undergo
A) denaturation.
B) desaturation.
C) deamination.
D) None of these choices are correct.

Question 11

The _____ is the primary site of nonessential amino acid synthesis.
A) pancreas
B) liver
C) gallbladder
D) spleen

Question 12

Ammonia is converted into _____ in the liver.
A) aluminum
B) water
C) urea
D) methionine

Question 13

Jake is a healthy 20-year-old college student who wants to increase his muscle mass. He recently started drinking high-protein shakes eight times a day. Each shake supplies 50 g of protein in the form of amino acids. His excess protein intake could contribute to
A) cancer.
B) atherosclerosis.
C) dehydration.
D) None of these choices are correct.

Question 14

During which stage of life is the body in a state of positive nitrogen balance?
A) infancy
B) childhood
C) pregnancy
D) All of these choices are correct.

Question 15

Amy is 22 years old. Her height is 5′6″, and she weighs 132 pounds. Based on this information, how many grams of protein should she consume per day to meet her RDA for protein?
A) 48
B) 56
C) 87
D) 104

Question 16

Chemical digestion of protein begins in the
A) mouth.
B) stomach.
C) small intestine.
D) colon.

Question 17

Which of the following statements is false?
A) In most cases, food allergens are proteins.
B) An allergic response occurs when the immune system reacts inappropriately to the presence of an allergen.
C) Signs of food allergy usually include hives, skin flushing, and difficulty breathing.
D) Incidence of peanut allergies is decreasing in the United States.

Question 18

A person suffering from _____ must consume a gluten-free diet.
A) celiac disease
B) reflux disease
C) chronic constipation
D) diabetes mellitus

Question 19

Sophia was diagnosed with PKU when she was 3 days old. Which of the following foods can she eat to meet her protein needs?
A) nuts
B) milk
C) chicken
D) potatoes

Question 20

On average, Victor consumes about 3000 kcal per day. According to AMDR guidelines, what percentage of his total energy intake should be supplied by protein?
A) 5–10%
B) 10–35%
C) 20–40%
D) 25–35%

Question 21

Which of the following menu items form a complementary protein dish when combined?
A) romaine lettuce, iceberg lettuce, and tomatoes
B) red raspberries, strawberries, and bananas
C) romaine lettuce, toasted bread cubes, and almonds
D) oranges, bananas, and Granny Smith apples

Question 22

A typical lacto-vegetarian consumes
A) fish.
B) milk.
C) eggs.
D) None of these choices are correct.

Question 23

Which of the following statements is true?
A) Kwashiorkor is most common in infants that consume breast milk.
B) Children living in developed nations have a high risk of kwashiorkor.
C) Lack of edema is a major sign of kwashiorkor.
D) Diets that supply adequate energy from carbohydrates but lack protein can cause kwashiorkor.

Question 24

Which of the following populations has the greatest risk for protein malnutrition in the United States?
A) elderly
B) vegetarians
C) teenagers
D) infants