Deck 14: Protein Structure and Function

Question 1

Denaturation destroys the primary structure of proteins.

Answer 1

False

Question 2

All of the following are functions of proteins except .

A)defense
B)structural support
C)energy production
D)major plasma membrane component

Answer 2

D

Question 3

Regulatory sites separate from the active site on proteins are called sites.

A)binding
B)allosteric
C)inhibitory
D)competitive

Answer 3

B

Question 4

When a single polypeptide chain is coiled and held together by hydrogen bonds,this is called aan)and occurs in the structure of proteins.

A)beta sheet;secondary
B)alpha helix;secondary
C)beta sheet;tertiary
D)alpha helix;tertiary

Question 5

Quarternary structure results when a single polypeptide chain folds into multiple domains.

Question 6

The binding of a regulatory molecule to an allosteric site on a protein that results in the inhibition of the protein is an example of .

A)non-competitive inhibition
B)allosteric activation
C)competitive inhibition
D)positive regulation

Question 7

The tertiary structure of proteins is primarily maintained by .

A)hydrogen bonds
B)covalent bonds
C)hydrophobic interactions
D)disulfide bonds

Question 8

Changes in can cause proteins to denature.

A)pH
B)salt concentration
C)temperature
D)all of the above

Question 9

Polar amino acids are hydrophilic and would be located on the exterior of proteins.

Question 10

Dissociation refers to the loss of structure of proteins.

A)primary
B)secondary
C)tertiary
D)quaternary

Question 11

In the tertiary structure of proteins,the amino acids are found in the interior of proteins and away from water.

A)polar
B)hydrophilic
C)hydrophobic
D)charged

Question 12

Enzymes the activation energy of the reaction.

A)lower
B)raise
C)inhibit
D)stabilize