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- 1. Multiple Choice
Which of the following is the key compound in the intermediary metabolism of carbohydrates, lipid and proteins
PEP
PGA
Acetyl CoA
-ketoglutarate
- 2. Multiple Choice
How many oxidation, decarboxylation and substrate level phosphorylation occurs respectively during complete oxidation of two pyruvate molecule :–
3, 5, 1
6, 10, 2
10, 6, 2
5, 3, 1
- 3. Multiple Choice
First respiratory substrate :
Lipid
Protein
Carbohydrate
Both (a) and (c)
- 4. Multiple Choice
Pyruvate which is formed by the glycolytic catabolism of carbohydrates in the cytosol, after it enters into mitochondrial matrix it undergoes :
Reductive amination
Oxidation decarboxylation
Reductive carboxylation
Reductive decarboxylation
- 5. Multiple Choice
How many oxidation step take place during glycolysis, link reaction and Kreb’s cycle.
1, 1 and 1
1, 1 and 4
1, 1 and 3
1, 1 and 8
- 6. Multiple Choice
What is the role of NAD+ in cellular respiration?
It is a nucleotide source for ATP synthesis.
It functions as an electron carrier.
It functions as an enzyme
It is the final electron acceptor for anaerobic respiration.
- 7. Multiple Choice
Which of these statements is incorrect?
Glycolysis operates as long as it is supplied with NAD that can pick up hydrogen atoms
Glycolysis occurs in cytosol
Enzymes of TCA cycle are present in mitochondrial matrix
Oxidative phosphorylation takes place in outer mitochondrial membrane
- 8. Multiple Choice
Which is required in glycolysis
ATP, ADP, NAD+, Glucose, cytoplasmic enzymes
FAD+, ADP, ATP, Glucose, cytoplasmic enzymes
NADP+, ATP, GTP, Glucose, cytoplasmic enzymes
NAD+, NADP+, ATP, Glucose, cytoplasmic enzymes
- 9. Multiple Choice
How many ATP molecules are formed from three molecules of acetyl CoA in Krebs cycle excluding electron transport chain?
5
3
6
33
- 10. Multiple Choice
When a molecule of pyruvic acid is subjected to fermentation and forms lactic acid, there is
Gain of 2 ATP
Loss of 3 ATP
Loss of 6 ATP
Gain of 3 ATP
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