One of the earliest symptoms of Vit. A deficiency is________________?
(A) Nyctalopia
(B) Xerophthalmia
(C) Bitot’s spot
(D) Keratomalacia
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
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
The enzyme that is specifically increased in obstructive jaundice is_____________?
(A) Glutamate oxaloacetate transaminase
(B) Glutamate pyruvate transaminase
(C) Alkaline phosphaase
(D) Acid phosphatase
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
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
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
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
Enzymes are classified according to_________________?
(A) Action on substrate
(B) Action of coenzymes
(C) Nature of the enzymes
(D) All of the above