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.Management Sciences
Category: Enzymes
Michaelis-Menten hypothesis states that_____________?
A. Rate of enzymatic reaction is independent of substrate concentration
B. Rate of non enzymatic reaction is proportional to substrate concentration
C. Km is the enzyme substrate complex association constant
D. Enzyme- substrate complex formation is essential in enzymatic reaction
Which of the following is a membrane bound enzyme that catalyzes the formation of cyclic AMP from ATP ?
A. Tyrosine kinase
B. Polymerase
C. ATP synthase
D. Adenylate cyclase
An enzyme that makes a double stranded DNA copy from a single stranded RNA template molecule is known as____________?
A. DNA polymerase
B. RNA polymerase
C. Reverse transcriptase
D. Phospho kinase
Lactate dehydrogenase is____________?
A. Isozyme
B. Coenzyme
C. Antienzyme
D. Zymogen
The most common enzyme deficiency in man is___________?
A. Glucose 6 phosphate dehydrogenase
B. Glucose 6 phosphatase
C. Hexokinase
D. Glucose 1,6 diphosphatase
In mycocarrdial infarction the first enzyme to rise____________?
A. CPK
B. LDH
C. SGOT
D. Amylase
Which of the following is NOT a characteristic feature of allosteric enzymes ?
A. They are multienzyme complex
B. Follow Michaelis-Menton Kinetics
C. Presence of Modulator site
D. Give sigmoid shaped curve
When the prosthetic group of an enzyme is an inorganic ion, it is called a_____________?
A. Cofactor
B. Coenzyme
C. Apoenzyme
D. Holoenzyme
Enzymes help by____________?
A. Lowering the activation energy
B. Increasing the substrate concentration
C. Decreasing the surface tension
D. Increasing the activation energy
Dehydrogenase used as coenzymes all of the following, except________________?
A. FMN
B. FAD
C. NADP+
D. Ferro protoporphyrin
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