Pyruvate generated by glycolysis, is converted to acetyl- coenzyme A, which is metabolized by the citric acid cycle generating energy-rich molecules. From the choices given below, select the right combination […]
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CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Products Yielded by the Citric Acid Cycle (Krebs Cycle) in Cellular Respiration
The citric acid cycle in respiration yields: (1) 1 GTP, 3 NADH, 1 FADH2 2 CO2 (2) 2 GTP, 2 FADH2, 6NADH, 2CO2 (3) 4GTP, 6NADH, 4FADH2, 2CO2 (4) 32 […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Processes Occurring Exclusively Inside Mitochondria During Respiration
During respiration, which of the following processes occur only inside mitochondria and not cytoplasm? (1) Glycolysis and the pentose-phosphate pathway. (2) Glycolysis and the citric acid cycle. (3) The citric […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Which Carbon in Glucose Is Released as 14CO2 During Pyruvate Decarboxylation?
Pyruvate can be allowed to decarboxylate into acetyl CoA and CO2 by pyruvate dehydrogenase complex. For evolution of 14C labeled carbon in CO2, which carbon atom must be radiolabeled in […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
The Key Compound Linking Glycolysis and the Krebs Cycle: Understanding the Role of Acetyl CoA
Among the following which compound links glycolysis and Kreb’s cycle (1) Acetyl Co A (2) Pyruvic Acid (3) Glucose (4) Oxaloacetic acid Cellular respiration involves a series of metabolic pathways […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Key Steps and Enzymatic Functions in the Conversion of Pyruvate to Acetyl-CoA
The following statements are made regarding conversion of pyruvate to acetyl- CoA going from glycolysis to citric acid cycle: A. Oxidation of pyruvate to acetyl-CoA is reversible. B. Pyruvate is […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Components of the Pyruvate Dehydrogenase Complex: Identifying the Enzymes in the Linkage Step Between Glycolysis and the TCA Cycle
Which one of the following enzymes is NOT a part of pyruvate dehydrogenase enzyme complex in linkage step of glycolysis and TCA cycle? (1) Pyruvate dehydrogenase. (2) Dihydrolipoyl transferase. (3) […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Complete Oxidation of Glucose: The Role of the TCA Cycle in Maximum Energy Yield
There is compete oxidation and maximum gain of energy, if glucose which has converted into pyruvate during glycolysis enters (1) TCA cycle (2) Gluconeogenesis (3) Beta oxidation (4) Pentose phosphate […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Ribose-5-Phosphate: The Essential Precursor for Nucleotide Synthesis Produced by the Pentose Phosphate Pathway
Ribose-5-Phosphate is precursor for ribose sugar in DNA and RNA and is obtained from (1) Pentose phosphate pathway (2) Kreb cycle (3) Glycolysis (4) Amino acids Ribose-5-phosphate (R5P) is a […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Understanding the Metabolic Roles of Glycogen, Pyruvate, and Ribose 5-Phosphate in Cellular Reactions
What are A, B and C in the following reactions? (1) Pyruvate, ribose 5-phosphate, glycogen. (2) Ribose 5-phosphate, glycogen, pyruvate. (3) Glycogen, pyruvate, ribose 5-phosphate. (4) Glycogen, citrate, ribose 5-phosphate […]
