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Coagulation and Denaturation

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

What is coagulation?

a)

bonds that hold large protein molecules together in compact, folded bundles

b)

the chemical bonds have broken and the protein molecule has unfolded and changed shape

c)

the joining together of lots of denatured proteins molecules, which changes the appearance and texture of the food.

2.

What is denaturation?

a)

bonds that hold large protein molecules together in compact, folded bundles

b)

the chemical bonds have broken and the protein molecule has unfolded and changed shape

c)

the joining together of lots of denatured proteins molecules, which changes the appearance and texture of the food.

3.

What is denaturation?

a)

bonds that hold large protein molecules together in compact, folded bundles

b)

the chemical bonds have broken and the protein molecule has unfolded and changed shape

c)

the joining together of lots of denatured proteins molecules, which changes the appearance and texture of the food.

4.

Protein molecules are made up from:

a)

Chemical bonds

b)

Protein bonds

c)

Amino Acids

d)

Amino bonds

5.

Heat, acids, air bubbles and whisking cause.....

a)

Protein molecules to join together

b)

Protein molecules to denature

c)

Protein molecules form a chain

d)

Protein molecules break into smaller bonds

6.

a protein molecule that has unfolded and changed shape has:

a)

Denatured

b)

Coagulated

7.

Denatured protein molecules are larger and take up more space.

a)

True

b)

False

8.

When denature protein molecules knock together they start to join together this is called

a)

Denaturation

b)

Coagulation

9.

When denatured proteins coagulate they, (tick two that apply)

a)

trap and hold water in pockets

b)

change the appearance and texture of food

c)

Change colour + smell of food

d)

join together and trap air in pockets

10.

Examples of coagulation taking place is:

a)

Fried egg, lemon tart, quiche

b)

Chicken nuggets, quiche, boiled egg

c)

Burger, quiche, cake

d)

Biscuits, fried egg, lemon tart