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Question

Which of the following statement(s) is false, regarding Proteins ?

I. A protein is a heteropolymer but not a homopolymer.

II. Collagen is the most abundant protein in the animal world.

III. RUBISCO is the most abundant protein in the biosphere.

IV The first amino acid in a polypeptide chain is C- terminal amino acid and the last is N- terminal amino acid.


A

I only

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B

II only

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C

ll & lll

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D

IV

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Solution

The correct option is D

IV


Statement IV is incorrect because, proteins are naturally synthesized starting from the N-terminus and ending at the C-terminus. Therefore conventionally, the first amino acid in a polypeptide chain is N- terminal amino acid and the last is the C- terminal amino acid.


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