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Worksheets

Protein

Total questions: 18

Worksheet time: 7mins

Name
Class
Date
1.

Which of the follow elements is found in all proteins?

a)

Nitrogen

b)

Helium

c)

Magnesium

d)

Sulfur

2.

How many calories per gram do proteins provide?

a)

2

b)

4

c)

7

d)

9

3.

Which part of the amino acid affects how it functions and relates to other amino acids?

a)

Central carbon

b)

COOH (carboxylic acid)

c)

R group (side chain)

d)

NH2 (amine group)

4.

When proteins are exposed to heat, acid, base, or mechanical disruption and lose their shape

a)

Acidification

b)

Denaturation

c)

Transamination

d)

Disruption

5.

Where does chemical digestion (hydrolysis) of protein begin?

a)

Mouth

b)

Stomach

c)

Small intestine

d)

Large intestine

6.

Which acid in the stomach converts pepsinogen to the active enzyme pepsin?

a)

Citric acid

b)

Lactic acid

c)

Acetic acid

d)

Hydrochloric acid

7.

In what form are MOST proteins absorbed?

a)

Whole proteins

b)

Polypeptides

c)

Peptides

d)

Amino acids

8.

This step in protein synthesis occurs in the cell's nucleus and produces mRNA from a DNA template.

a)

Translation

b)

Transcription

9.

Which cell organelle is the protein-making factory?

a)

Nucleus

b)

Golgi body

c)

Ribosome

d)

Mitochondria

10.

Which type of amino acid can the body synthesize for itself?

a)

Nonessential amino acids

b)

Essential amino acids

c)

No amino acids

d)

All amino acids

11.

All of the follow are roles of proteins in the body, EXCEPT:

a)

Fluid Balance Regulators

b)

Enzymes

c)

Hormones

d)

Building blocks for body structures

e)

Primary cell membrane component

12.

Where are amino acids stored?

a)

Adipose tissue

b)

Small intestines

c)

Brain

d)

Amino acid pools

13.

When protein is being broken down and nitrogen excretion is greater than intake, a person is in a state of ____________ nitrogen balance.

a)

Positive

b)

Negative

c)

Equilibrium

14.

Protein is easily stored in the body.

a)

True

b)

False

15.

When a nonessential amino acid is not available, body cells can make it from this compound.

a)

Fatty acid

b)

Lactic acid

c)

Keto acid

d)

Ammonia

16.

What toxic compound does deamination of amino acids produce?

a)

Urea

b)

Keto acid

c)

Ammonia

d)

Glucose

17.

Which is a source of a complete (high-quality) protein?

a)

Soy

b)

Wheat bread

c)

Broccoli

d)

Nuts

18.

How much protein do you need each day (RDA for inactive adults)?

a)

30 g

b)

150 g

c)

0.8 g/kg body weight

d)

1 g/kg body weight