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PROTEIN DENATURATION

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

It is the net effect of alterations in the biological, chemical, and physical properties of the protein by mild disruption of its structure.

a)

Protein Denaturation

b)

Enzyme Action

c)

Coconut Milk

d)

Chemistry

2.

These are some of the factors that influence the shape of a protein EXCEPT ONE:

a)

Temperature

b)

pH

c)

salinity

d)

glucose

3.

It involves the breaking of many of the weak linkages, or bonds within a protein molecule that are responsible for the highly ordered structure of the protein in its natural state.

a)

Proteins

b)

Denaturation

c)

Acid

d)

Renaturation

4.

These are large molecules found in our bodies and food, consisting of many smaller components called amino acids.

a)

Acids

b)

Oxygen Atom

c)

Hydrogen

d)

Proteins

5.

Protein molecules deform and unravel when exposed to _________.

a)

hydrogen

b)

Acid

c)

oxygen

d)

water

6.

When a solution of a protein is boiled, the protein frequently becomes _______.

a)

broken

b)

insoluble

c)

soluble

d)

cool

7.

In some instances the original structure of the protein can be regenerated; the process is called ___________.

a)

renaturation

b)

denaturation

c)

hydrogen bond

d)

amino acid

8.

Denaturation _______ involve identical changes in protein molecules.

a)

does not

b)

does

c)

sometimes

d)

always

9.

Because proteins’ function is dependent on their shape, denatured proteins are _______.

a)

functional

b)

no longer functional

c)

weak

d)

strong

10.

During cooking the applied heat causes proteins to _________.

a)

spread

b)

vibrate

c)

disappear

d)

multiply

11.

When a protein is exposed to a different environment, such as increased temperature, it unfolds into a single strand of _________.

a)

amino acids

b)

water

c)

alcohol

d)

hydrogen

12.

It can be used to disrupt hydrogen bonds and non-polar hydrophobic interactions.

a)

heat

b)

proteins

c)

eggs

d)

bacteria

13.

It denatures proteins by disrupting the side chain intramolecular hydrogen bonding.

a)

acid

b)

water

c)

alcohol

d)

protein

14.

A ____________ merely coagulates the protein on the outside of the cell wall and prevents any alcohol from entering the cell.

a)

95% alcohol solution

b)

amino acids

c)

lemon juice

d)

salt

15.

Hydrogen bonding between "side chains" occurs in _______ protein structure in a variety of amino acid combinations.

a)

tertiary

b)

primary

c)

secondary

d)

none