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Which of these is a 3-carbon organic acid?

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in Biology – Class 11 by (272k points)
Which of these is a 3-carbon organic acid?

(a) PGA

(b) BTCA

(c) Citric acid

(d) Acetic acid

I had been asked this question in homework.

My query is from Higher Plants Photosynthesis in section Photosynthesis in Higher Plants of Biology – Class 11

1 Answer

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Best answer
The correct choice is (a) PGA

The best explanation: PGA or 3-phosphoglyceric acid is a 3-carbon organic acid. Citric acid has 6 carbon atoms while acetic acid has 2 carbon atoms. PGA is a product of the carbon dioxide fixation stage of photosynthesis.

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