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Question

The most abundant protein is
  1. Ferredoxin
  2. Rubisco
  3. Haemoglobin
  4. Cytochrome

A
Cytochrome
B
Rubisco
C
Haemoglobin
D
Ferredoxin
Solution
Verified by Toppr

RuBisCO is the most abundant enzyme which is used to fix carbon during dark reaction of the photosynthesis. It is a primary acceptor of carbon dioxide during Calvin cycle. It is also known as Ribulose-1,5-bisphosphate carboxylase/oxygenase. It fixes the carbon dioxide to 3-phosphoglycerate. It also accepts oxygen during photorespiration and forms phosphoglycolate and 3-phosphoglycerate.
So, the correct answer is option A.

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