(A) Lactate
(B) Glycerol
(C) α-ketoglutarate
(D) Acetyl CoA
Tag: Mcqs of Biochemistry
Which one of the following statements concerning glucose metabolism is correct?
(A) The conversion of Glucose to lactate occurs
only in the R.B.C
(B) Glucose enters most cells by a mechanism in
which Na+ and glucose are co-transported
(C) Pyruvate kinase catalyses an irreversible
reaction
(D) An elevated level of insulin leads to a
decreased level of fructose 2, 6-bisphosphate
in hepatocyte
Which one of the following would be expected in pyruvate kinase deficiency?
(A) Increased levels of lactate in the R.B.C
(B) Hemolytic anemia
(C) Decreased ratio of ADP to ATP in R.B.C
(D) Increased phosphorylation of Glucose to
Glucose-6-phosphate
Compared to the resting state, vigorously contracting muscle shows?
(A) An increased conversion of pyruvate to lactate
(B) Decreased oxidation of pyruvate of CO2 and
water
(C) A decreased NADH/NAD+ ratio
(D) Decreased concentration of AMP
The reaction catalysed by phosphofructokinase?
(A) Is activated by high concentrations of ATP and
citrate
(B) Uses fruitose-1-phosphate as substrate
(C) Is the rate-limiting reaction of the glycolytic
pathway
(D) Is inhibited by fructose 2, 6-bisphosphate
Glucokinase?
(A) Is widely distributed and occurs in most
mammalian tissues
(B) Has a high km for glucose and hence is
important in the phosphorylation of glucose
primarily after ingestion of a carbohydrate
rich meal
(C) Is widely distributed in Prokaryotes
(D) None of these
All of the following statements about the enzymic complex that carries out the synthesis of ATP during oxidative phosphorylation are correct except?
(A) It is located on the matrix side of the inner
mitochondrial membrane
(B) is inhibited by oligomycin
(C) It can exhibit ATPase activity
(D) It can bind molecular O2
An uncoupler of oxidative phosphorylation such as dinitrophenol?
(A) Inhibits electron transport and ATP synthesis
(B) Allow electron transport to proceed without
ATP synthesis
(C) Inhibits electron transport without impairment
of ATP synthesis
(D) Specially inhibits cytochrome b