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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 […]

5. During the operation of C2 oxidative photosynthetic cycle, which of the following metabolites is transported from chloroplast to peroxisome? (1) Glycerate              (2) Serine (3) Glycine                 (4) Glycolate Introduction […]

4. Which one of the following metabolites moves from rnitochondria to peroxisome during the operation of the C2 oxidative photosynthetic cycle? (1) Glycerate (2) Glycolate (3) Glycine    (4) Serine Introduction […]

3. During photorespiration which organelle is involved in conversion of glycolate into glyoxylate? (1) Mitochondria     (2) Peroxisomes (3) Chloroplast       (4) Nucleus The correct answer is (2) Peroxisomes. Detailed Explanation During […]

The organelle of C3 plants, where glyoxylate is formed is (1) Chloroplast (2) Peroxisome (3) Mitochondria            (4) Cytosol Introduction Glyoxylate is a key intermediate produced during photorespiration in C3 […]