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.
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.