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created 5 years ago by jenkarmata
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Nutrition 200 2012

updated 5 years ago by jenkarmata

Grade levels:
College: Second year

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1

What type of reaction is required to bind 2 molecules of glycine together & release a molecule of water?

Condensation

2

What is the Daily Value for protein based on 2000-kcalorie intake?

50g

3

What is an oligopeptide?

A string of about 4-9 amino acids

4

All of the following are fates of amino acids in the intestinal tract except

some may be used for synthesis of gastric protease.

5

What is meant by the amino acid sequence of a protein?

Order of amino acids in the peptide chain

6

A reference protein equals or exceeds the essential amino acid requirements of all of the following population groups except

infants

7

After digestion of proteins, what products are absorbed into the circulation?

Free amino acids, and a few dipeptides & tripeptides

8

Which of the following would you not expect to see in a person with kwashiorkor?

Increased physical activity

9

Jim, a college baseball player, tells you that he has started to take glutamine supplements. How would you advise him?

Since single amino acids do not occur naturally in foods, they offer no benefit to the body & may even be harmful

10

Which of the following is a consequence of excess protein intake?

Increased production & excretion of urea

11

What amino acid has been linked to the development of the rare blood disorder eosinophilia myalgia in people who took it as a supplement?

Tryptophan

12

In the metabolism of amino acids for energy, what is the fate of the amino group?

Excreted as urea

13

What protein is intimately involved in the formation of scar tissue in wound healing?

Collagen

14

Which of the following may be used to determine protein utilization?

Nitrogen balance

15

Terms used to classify amino acids in the diet include all of the following except

partially essential.

16

What is the percent digestibility of most animal proteins?

90-99

17

What is the process by which heat or acidity disrupts the normal shape of a protein chain?

Denaturation

18

What is meant by protein turnover?

The synthesis & degradation of body proteins

19

In the study of protein nutrition, what term describes the amount of amino acids absorbed from a given amount of protein consumed?

Digestibility

20

What is the structure of an enzyme?

Protein

21

What is the percentage of total energy derived from protein in a diet containing 50 grams of protein & 2000 kcalories?

10

22

Which of the following is the most likely side effect of high-protein, low-carbohydrate diet?

Increased thirst

23

Protein-hydrollyzing enzymes are commonly known as

proteases.

24

How do sodium & potassium travel into & out of cells?

There are transport proteins within the cell membrane that pick up & release the minerals across the membran

25

Which of the following is a feature of protein nutrition?

The protein RDA assumes that dietary protein is from a mix of low- and high- quality sources

26

What is the most likely reason for a person to have abnormally high blood ammonia levels?

Liver dysfunction

27

Which of the following describes a relationship between protein/amino acids & heart disease?

Elevated blood homocysteine levels are associated w/smoking cigarettes & drinking alcohol

28

Which of the following processes is regulated primarily by the buffering action of proteins?

pH balance

29

The conditions known as acidosis & alkalosis refer to a disruption of the body's

pH balance.

30

In kwashiorkor, what mineral is often present in an unbound form that promotes bacterial growth?

Iron

31

In general, the protein quality of legumes would be most improved by the addition of a plant protein rich in

methionine.

32

What type of protein would the body make in order to heal wound?

Collagen

33

The disease phenylketonuria is related chiefly to abnormal metabolism of

a certain amino acid.

34

Which of the following defines protein turnover?

The sum of protein synthesis & degradation

35

Which of the following is involved in the clotting of blood?

Fibrin

36

What is the usual initial therapy for the treatment of kwashiorkor?

Fluid balance restoration

37

The study of how food interacts with genes is known as

nutritional genomics

38

If protein needs are expressed per kilogram of body weight, which of the following describes the requirements of infants?

Greater than adults

39

All of the following assumptions are made by the committee in setting the RDA for protein except

the fat content of the diet will be high.

40

A dispensable amino acid is one that

can be synthesized by the body.