Which of the following substances are intermediates in respiration and photosynthesis both?
Correct answer: B. Phosphoglyceraldehyde and Dihydroxyacetone phosphate
- A. Ribose and Heptulose
- B. Phosphoglyceraldehyde and Dihydroxyacetone phosphate
- C. Glucose and Galactose
- D. Fructose and Ribulose
Explanation
Phosphoglyceraldehyde and Dihydroxyacetone phosphate are isomers. They are formed during glycolysis in photosynthesis when Fructose 1,6 bisphosphate breaks down into interconvertible molecules Phosphoglyceraldehyde and Dihydroxyacetone phosphate. Also, Phosphoglyceraldehyde (Glyceraldehyde-3-Phosphate) is an intermediate in the Calvin cycle of photosynthesis
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