Which one of the following is precursor of protochlorophyll?

Acetyl COA

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Succinyl COA

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Oxlaoacetic acid

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α

-ketoglutarate

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Solution

The correct option is B Succinyl COA
The chlorophyll molecule is important for trapping of light in photosynthesis. The minerals magnesium and iron are an important requirement for their biosynthesis. The chlorophylls are synthesized as protochlorophyllide, which gets converted into chlorophyll on exposure to light. The succinyl-CoA, an intermediate of Krebs cycle and the amino acid glycine initiate the biosynthesis of chlorophyll a-first producing protochlorophyllide, then chlorophyllide A and ultimately chlorophyll A.
So, the correct answer is option B.

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