A. Dissociation constant
B. The normal physiological substrate concentration
C. Substrate concentration at half maximal velocity
D. Numerically identical for all isozymes that catalyses a given reaction
Related Mcqs:
- The enzyme that is specifically increased in obstructive jaundice is_____________?
A. Glutamate oxaloacetate transaminase
B. Glutamate pyruvate transaminase
C. Alkaline phosphaase
D. Acid phosphatase - Enzyme that catalyses the transfer of a molecule group from one molecule to another is_____________?
A. Oxidases
B. Peptidases
C. Transferases
D. LIpases - The enzyme that splits hydrogen peroxide into water and oxygen is_____________?
A. Cytochromes
B. Cytochrome P 450
C. Super oxide dismutase
D. Catalase - In humans and other primates as well as in guinea pigs, this vitamin cannot be synthesized because of the absence of the enzyme L-gulonolactone oxidase: the vitamin is_____________?
A. Pantothenic acid
B. Nicotinic acid
C. Ascorbic acid
D. Folic acid - Enzyme + coenzyme constitutes_____________?
A. Apoenzyme
B. Proenzyme
C. Protoenzyme
D. Holoenzyme - Fraction of CPK is an enzyme that is elevated in a myocardial infarct is____________________?
A. MM fraction
B. MB fraction
C. BB fraction
D. Both MM and BB fraction - The enzyme phosphofructo kinase-1 is strongly activated by_______________?
A. Cyclic AMP
B. Adenosine tri phosphate
C. Citrate
D. Fructose 2,6 bis phosphate - The activity of the following enzyme is affected by biotin deficiency____________?
A. Transketolase
B. Dehydrogenase
C. Oxidase
D. Carboxylase - 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 - 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