Question

Which is the most abundant protein on earth?

• A. Albumins
• B. Plastocyanin
• C. Rubisco
• D. None of these

Answer 1

The correct option is C

Rubisco

The correct option is C.

Explanation of the correct option:

1. Rubisco (also known as chloroplast enzyme ribulose bisphosphate carboxylase/oxygenase) is found in the chloroplast.
2. It is responsible for global carbon fixation.
3. Hence, it is the most abundant protein present on the earth.

Explanation of the incorrect options:

Option A

It is a protein produced by the Liver in humans. It prevents the leakage of fluid into other tissues.

Option B

Plastocyanin is found in the thylakoid lumen and is a copper-containing protein that mediates the process of electron transfer during photosynthesis.

Final answer: Rubisco is the most abundant protein on earth.