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FN43 - 3.02 Protein

Total questions: 20

Worksheet time: 20mins

Name
Class
Date
1.

Which food provides the densest amount of essential amino acids per gram of protein?

a)

beans

b)

beef

c)

rice

d)

soy

2.

Which method of protein denaturation is the most likely to be reversible?

a)

beating

b)

changes in pH

c)

freezing

d)

heating

3.

Having polar and nonpolar ends allows proteins to:

a)

be macromolecules

b)

dissolve solutes

c)

have elastic structures

d)

act as emulsifiers

4.

Which action of protein molecules is caused by a temporary alteration of the protein’s shape?

a)

Coagulation

b)

Denaturation

c)

Gelatinization

d)

Hydrolyzation

5.

Which causes denaturation of protein?

a)

Adding lemon juice

b)

Refrigerating

c)

Marinating in olive oil

d)

Sweetening with molasses

6.

Which is an example of a food product made from texturized protein?

a)

Soy crumbles

b)

Hamburger

c)

Sausage

d)

Soy sauce

7.

What is the function of a protein in an emulsion?

a)

foaming agent

b)

heat medium

c)

stabilizer

d)

texturizer

8.

Which action of protein molecules is caused by a permanent change of the protein’s shape?

a)

coagulation

b)

denaturation

c)

gelatinization

d)

hydrolyzation

9.

Which is an example of denaturation?

a)

baked bread

b)

melted butter

c)

cheese curds

d)

pickled beets

10.

Which is an example of coagulation?

a)

milk shake

b)

pickle

c)

poached egg

d)

toast

11.

What element does protein have that carbs and lipids do NOT have?

a)

oxygen

b)

carbon

c)

hydrogen

d)

nitrogen

12.

Which peptide has two amino acids joined by one peptide bond?

a)

aminopeptide

b)

monopeptide

c)

dipeptide

d)

polypeptide

13.

Which peptide has many amino acids (coiled up) and joined by many peptide bonds?

a)

aminopeptide

b)

monopeptide

c)

dipeptide

d)

polypeptide

14.

A complete protein is found mostly in __________ sources

a)

animal

b)

plant

15.

An incomplete protein is found mostly in __________ sources

a)

animal

b)

plant

16.

Which type of protein is higher quality?

a)

peptide-based protein

b)

amino acid-based protein

c)

animal-based protein

d)

plant-based protein

17.

Gluten is the protein in ___________.

a)

rice

b)

wheat

c)

corn

d)

gel

18.

All of these CAN prevent gluten development EXCEPT:

a)

different grains (rye or corn)

b)

protein

c)

sugar

d)

liquids

19.

Which of these is NOT an example of foam created from protein:

a)

soda

b)

whipped cream

c)

frothy milk in a cappuccino

d)

scrambled eggs

20.

Denaturation is any change in shape of a protein without breaking the ________ bond.

a)

amino acid

b)

gelatin

c)

peptide

d)

pH