351. Enzyme that catalyses the transfer of a molecule group from one molecule to another is_____________?
A. Oxidases
B. Peptidases
C. Transferases
D. LIpases
352. The activity of this plasma enzyme is responsible virtually for all plasma cholesterol esters in humans_______________?
A. Lecithin cholesterol acyl transferase (LCAT)
B. Pyrophospho mevalonate decarboxylase
C. HMG CoA reductase
D. Phospho mevalonate kinase
353. Enzymes are classified according to_________________?
A. Action on substrate
B. Action of coenzymes
C. Nature of the enzymes
D. All of the above
354. 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
355. A material that speeds up a chemical reaction without chemically becoming involved is called_____________?
A. A solvent
B. A base
C. A catalyst
D. Thermoplastic
356. Km of an enzyme is_____________?
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
357. Acetyl Co-A acts as a substrate for all the enzymes except______________?
A. HMG-Co A synthase
B. Malic enzyme
C. Malonyl CoA synthetase
D. Fatty acid synthetase
358. The enzyme that is specifically increased in obstructive jaundice is_____________?
A. Glutamate oxaloacetate transaminase
B. Glutamate pyruvate transaminase
C. Alkaline phosphaase
D. Acid phosphatase
359. Elevated levels of serum glutamic oxaloacetic transaminase in indicative of______________?
A. Deficiency of glutamic acid
B. Deficiency of oxaloacetic acid
C. Liver disease
D. All of the above
360. Muscle glycogen, which cannot contribute to blood glucose due to the absence of which enzymes ?
A. Phosphoglutamase
B. Branching enzyme
C. Debranching enzyme
D. Glucose-6-phosphotase