8. Select the correct sequence for the pathways of glucose catabolism A. glycoly

Question

8. Select the correct sequence for the pathways of glucose catabolism A. glycolysis-acetyl CoA->pyruvate oxidation-> electron transport chain->Krebs cycle B. g?ycolysis-acetyl CoA->pyruvate oxidation-> Krebs cycle->clcctron transport chain C. glycolysis->pyruvate oxidation->acctyl CoA->clectron transport chain->Krebs cycle D. glycolysis ? pyruvate oxidation-> acryl CoA-> Krebs cycle-> el tron transport chain E. glycolysis->chemiosmosis->acetyl CoA-> electron transport chain-> Krebs cycle 9. The oxidized coenzyme electron carriers required for the citric acid cycle are A. NADP+& NAD+ B. NADH & FADH2 C. FAD & NAD+ D. ATP & NADH E. NADPH & NADH 1o. What products of the light dependent reactions are used in the'dark reactions? A. ATP, NADPH B. ATP, NADH C. ADP, NADP+ D. CO.. H20 E. CO2 Oa I1. Aerobic respiration is more efficient than fermentation because A. the lactate produced via fermentation retains much of the cnergy of the original glucose B. alcohol produced via fermentation may kill the host organism C. NADH is not oxidized during fermentation D. the mitochondrial membrane is leaky to protons E. the mitochondrial membrane loses some H+ gradient due to the co-transport of other molecules

Explanation / Answer

Hi Answer:

8. Select the correct sequence for the pathways of glucose catabolism

Answer: Option D. [glycolysis --- pyruvate oxidation ---- acetyle-coA --- Krebs cycle ---electron transport chain]

9.The oxidized coenzyme electron carriers required for the citric acid cycle are

Answer: Option C [FAD & NAD+][ the two most common electron carriers in the body]

10. What products of the light dependent reactions are used in the dark reactions?

Answer: Option A [ATP, NADPH] [The product of light reaction i.e. NADH is used as the powerful reducing agent in dark reaction, It reduces 1,3-BPG into glyceraldehye-3-phosphate.]

11. Aerobic respiration is more efficient than fermentation because ….

Answer: Option E [The mitochondrial membranes lose some H+ gradient due to co-transporter of other molecules.] This gradient losing promotes the functioning of the ATP synthetase therefore the phosphorylation of ADP took place which form ATP.

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