Question 1

Plant proteins do not match our needs for essential amino acids and therefore are called ______ proteins.

Accepted Answer

A) nonessential 
B) uncomplemetary 
C) incomplete 
D) branched-chain

Question 2

Which of the following is an essential amino acid?

Accepted Answer

A) Aspartic Acid 
B) Cysteine 
C) Arginine 
D) Tryptophan

Question 3

Kwashiorkor appears in children between the ages of 2 and 5 years.The reason is that

Accepted Answer

A) growth needs are low. 
B) children have been weaned from breast milk to starchy gruels. 
C) by this time,adequate exposure to other children allows them to catch it. 
D) protein intake has been high for a long enough time to cause kidney damage.

Question 4

The type of malnutrition that results primarily from not consuming enough calories is called

Accepted Answer

A) kwashiorkor. 
B) marasmus. 
C) sickle cell anemia. 
D) phenylketonuria.

Question 5

The best estimate for the amount of protein required for nearly all adults is ______ g/kg/day.

Accepted Answer

A) 0.5 
B) 0.8 
C) 1.6 
D) 2.0

Question 6

It takes approximately ______ kg kilograms of grain to produce _______ kg kilogram of animal protein in cereal-fed animals.

Accepted Answer

A) 2;1 
B) 3;1 
C) 5;1 
D) 10;1

Question 7

Approximately how many different amino acids are used in the synthesis of body proteins?

Accepted Answer

A) 5 
B) 9 
C) 20 
D) 29

Question 8

Most proteins are ______ (joining of 10 or more amino acids),ranging from about 50 to 2000 amino acids.

Accepted Answer

A) dipeptides 
B) tripeptides 
C) proteases 
D) polypeptides

Question 9

Which of the following is a true statement about body proteins?

Accepted Answer

A) Body proteins are in a constant state of breakdown,rebuilding,and repair. 
B) Body proteins change very little after age 20. 
C) Synthesis of body proteins is directed by antigens,which are present in every cell. 
D) Amino acids from dying cells or worn-out cell parts are excreted as a component of bile.

Question 10

Jack weighs 176 pounds (80 kilograms).What would be his RDA for protein?

Accepted Answer

A) 10 grams 
B) 64 grams 
C) 80 grams 
D) 27 grams

Question 11

Which of the following conditions would describe a child with kwashiorkor?

Accepted Answer

A) Bowed legs 
B) Visible eczema and cold sores 
C) Edema in the abdomen and legs 
D) Skin-and-bones appearance

Question 12

The combination of plant foods that most often is used to provide complete protein is

Accepted Answer

A) legumes and nuts. 
B) legumes and grains. 
C) vegetables and nuts. 
D) vegetables and seeds.

Question 13

If a person does not eat enough carbohydrate to supply the glucose the body needs,which of the following will happen?

Accepted Answer

A) Fatty acids will be converted to glucose. 
B) The pancreas will convert insulin to glucose. 
C) The liver will convert amino acids to glucose. 
D) The pancreas will convert protein to glucose.

Question 14

The edema in children with kwashiorkor is the result of fluid leaking into

Accepted Answer

A) body tissues from the bloodstream because of decreased blood protein levels. 
B) body tissues from the bloodstream because of decreased energy levels. 
C) the bloodstream from body tissues because of decreased cellular proteins. 
D) the bloodstream from body tissues because of decreased energy.

Question 15

Which of the following is a food that provides all of the essential amino acids?

Accepted Answer

A) Wheat 
B) Peanut butter 
C) Navy beans 
D) Milk

Question 16

A hereditary condition caused by an incorrect amino acid in a protein chain is

Accepted Answer

A) kwashiorkor. 
B) sickle cell anemia. 
C) marasmus. 
D) edema.

Question 17

Kwashiorkor usually is associated with a deficiency of

Accepted Answer

A) carbohydrates. 
B) fat. 
C) protein. 
D) kilocalories.

Question 18

Antibodies are

Accepted Answer

A) hormones. 
B) enzymes. 
C) lipoproteins. 
D) proteins.

Question 19

A person that does not eat any animal foods and consumes only plant products is called a(n)

Accepted Answer

A) fruitarian. 
B) omnivore. 
C) lactoovovegetarian. 
D) vegan.

Question 20

In proteins,amino acids are joined by ______ bonds.

Accepted Answer

A) amino 
B) peptide 
C) proteolytic 
D) nitrogen

Exam 6: Proteins