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15. Following statements are related to oxidative phosphorylation A. Redox reactions of electron transport chain coupled with ATP synthesis are collectively called oxidative phosphorylation. B.Three major processes: glycolysis, oxidative pentose […]

The oxidation pentose phosphate pathway provides the reducing equivalents for nitrite reduction in plastids (leucoplasts) of non-green tissues. Which one of the following statements would be correct for the above […]

13. Which one of the following statements is INCORRECT about the role of oxidative pentose phosphate pathway in plant metabolism? (1) Generation of NADPH required to drive biosynthetic reactions. (2) […]

Pyruvate dehydrogenase complex has sophisticated regulatory mechanisms including reversible phosphorylation. Various metabolites are also able to modulate the dehydrogenase complex. Which one of the following statements is NOT correct? (1) […]

11. During episodes of anoxia in plants, pyruvate produced in glycolysis is initially fermented to lactate. During later stage, there is an increase in the fermentation to ethanol and decrease […]

10. Pyrurate dehydrogenase is subject to feedback inhibition by its products in glycolysis. Some of the chemical compounds which might be involved in the process, are listed below: A. NADH                  […]

9. Ribulose bisphosphate carboxylase (Rubisco) catalyzes both carboxylation and oxygenation of ribulose-1,5bisphosphate. The latter reaction initiates a physiological process known as ‘photorespiration’. The following are certain statements on photorespiration: (A) […]

8. Following  are certain   statements regarding photorespiration pathway in plants: (A) The first two-carbon (2C) compound synthesized by the action of Rubisco in the chloroplast is glycolate (B) Glycolate […]

7. Which of the following statements are associated with the process of photorespiration in plants? (A) Photorespiration takes place in mainly C3 plants. (B) Photorespiration takes place in mainly C4 […]

6. In which one of the following subcellular organelles in serine synthesized during the oxidative photosynthetic carbon (C2) pathway? (1) Chloroplast (2) Mitochondria (3) Peroxisome (4) Rough endoplasmic reticulum Introduction […]