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Worksheets

ENZYMES

Total questions: 15

Worksheet time: 4hrs 45mins

Name
Class
Date
1.

Why we are using two parameters, Vmax and Km, for characterization of an enzyme - may we reduce these two parameters to one, for example, Vmax/Km ratio?

4 lines
2.

Why enzymes do not change equilibrium constants of chemical reactions?

4 lines
3.

Why we frequently use end-point methods instead of kinetic ones to measure enzymatic activities (i.e. take one measurement instead of monitoring reactions in real time?)

4 lines
4.

Enolase is classified as

a)

oxidoreductase

b)

translocase

c)

hydrolase

d)

ligase

e)

lyase

5.

Alcohol dehydrogenase belongs to

a)

oxidoreductases

b)

hydrolases

c)

ligases

d)

lyases

e)

translocases

6.

DNA polymerase is classified as

a)

Transferase

b)

Lyase

c)

Hydrolase

d)

Ligase

e)

Oxidoreductase

7.

List natural ribozymes

4 lines
8.

What is the function of the protein component of telomerase?

4 lines
9.

What is the fate of peptides produced by proteasome?

4 lines
10.

Why cotransporters so frequently employ Na+?

4 lines
11.

The human organism contains a number of different proton-pumping ATPases. Name one of them that is a clinically important target by a specific inhibitor?

4 lines
12.

How we can deduce from primary structure whether a protein belongs to integral membrane proteins?

4 lines
13.

List enzymes that employ various benzoquinones as cofactors.

4 lines
14.

Enzyme that catalyzes this reaction is called

4 lines
15.

Name the enzymes that catalyze these two reacions

4 lines