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Quiz 136
Mdcat-past-papers Quiz
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2701. The Calvin cycle is completed in ------ stages:
Two
Three
Four
Five
2702. First stable compound during Calvin cycle is:
3-Phosphoglycerate
Glyceraldehyde-3-phosphate
1,3 bisphosphoglycerate
Ribulose bisphosphate
2703. What is the function of Ribulose?
Intermediate in photosynthesis
Intermediate in cellular respiration
Component of DNA and RNA
Component of cell wall
2704. Cellulose is:
Polyhexose
polyketose
polypentose
polytriose
2705. FADH2 is formed in:
Glycolysis
Pyruvic acid oxidation
Krebs cycle
form in all
2706. Hexokinase plays a role in:
Glycolysis
Pyruvic acid oxidation
Krebs cycle
Both a & b
2707. Pyruvate is converted into --- before entering into Krebs cycle:
Acetyl CoA
Citrate
CO2
Malate
2708. Which step of Krebs cycle does not yield NADH?
Citrate → isocitrate
Isocitrate → α-Ketoglutarate
Malate— Oxaloacetate
All reduces NADH
2709. Dark reaction of photosynthesis takes place in- of chloroplast:
Thylakoids
Grana
Intergrana
Stroma
2710. How many ATPs are required to form glucose molecule?
9
18
36
24
2711. End product of Calvin cycle is:
3-phosphoglycerate
1,3-bisphosphoglycerate
Glyceraldehyde-3-phosphate
Glucose
2712. Glycolysis is the breakdown of glucose into two molecules of:
Glycerate
Pyruvate
Lactic acid
Succinic acid
2713. Before entering Krebs cycle, the pyruvate is first decarboxylated and oxidized into:
Alpha ketoglutaric acid
Glyceric acid
Citric acid
Acetic acid
2714. Total NADH formed by one molecule of glucose during Krebs cycle are:
6
3
8
18
2715. The terminal electron acceptor in ETC is:
Hydrogen
Iron
Cytochrome
Oxygen
2716. One molecule of FADH2 is produced in Krebs cycle during conversion of:
Fumarate to Malate
Succinate to fumarate
Malate-Oxaloacetate
alpha-ketoglutarate-succinate
2717. Every molecule of NADH,fed into ETC produces:
2 ATP
3 ATP
4 ATP
6 ATP
2718. The end product of anaerobic respiration in humans and other mammals is:
Pyruvic acid
Ethanol
Lactic acid
Glucose
2719. Oxidative phase of glycolysis starts with dehydrogenation of:
Glucose
R1,5BUP
G3P
NADH
2720. In one turn, the krebs cycle produces one molecule of ATP,one molecule of FADH2 and --- molecule of NADH:
1
2
3
4
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