Gallery

Enzyme quiz

ENZYME QUIZ
The following is a Multiple answer question examination
Select the correct multiple answer using ONE of the keys A, B, C, D or E as follows:
A. 1, 2 and 3 are correct
B. 1 and 3 are correct
C. 2 and 4 are correct
D. only 4 is correct
E. all are correct

1. Which of the following enzymes belong to major class 1
1) Phenolase
2) Alcohol dehydrogenase
3) Peroxidase
4) Hexokinase

2. TPP is a cofactor for :
1) Pyruvate decarboxylase
2) Alcohol dehydrogenase
3) Alpha ketoglutarate dehydrogenase
4) Pyruvate kinase

3. The correct order of the following enzyme classes are:
1) Hydrolases, oxidoreductases, transferases
2) Transferases, hydrolases, ligases
3) Ligases, isomerases, lyases
4) Lyases, isomerases, ligases

4. The following binds to both the free enzyme and the enzyme substrate complex:
1) Uncompetitive inhibitor
2) Non-competitive inhibitor
3) Competitive inhibitor
4) Mixed inhibitor
5. Malonate is what can of inhibitor:
1) Reversible
2) Mixed competitive
3) Competitive
4) Uncompetitive

6. For mixed inhibition :
1) Km increases
2) Vmax decreases
3) Km decreases
4) Vmax is constant

7. The specificity of Phenolase:
1) Stereospecific
2) Relative
3) Dual
4) Absolute to catechol

8. Enzymes:
1) Show specificity
2) Speeds up a reaction rate
3) Doesn’t affect equilibrium
4) Affects free energy

9. The Km:
1) The number of substrate converted to products per enzyme per second
2) Determines substrate affinity
3) The point of saturation of the active site of an enzyme
4) The substrate concentration that is equal to ½ Vmax

10. Michaelis-menten equation assumptions states:
1) Enzyme- substrate complex concentration is constant
2) At initial velocity the product concentration will not be small
3) Substrate concentration is larger than enzyme concentration
4) Substrate concentration that is equal to Vmax

By Amethyst

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s