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.

I only

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II only

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$l l & l l l$

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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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Similar questions

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.

Q. Which of the following statements are true?
(a) Proteins are the heteropolymer of

α

-amino acid.
(b) Sugar found in nucleic acid, is in the form of

β

-form.
(c) Nucleic acids show acidic nature.
(d) 5-methyl uracil binds with the first carbon atom of the ribose sugar.
(e) Collagen is the most abundant protein in the plant world.

_____is the most abundant protein in animal world and ____is the most abundant protein in the whole biosphere.

Q. Protein is a polypeptide of amino acids.

Each polypeptide in a protein has amino acids linked with each other in a specific sequence. This sequence of amino acids is said to be .............. .
(a) primary structure of proteins (b) secondary structure of proteins
(c) tertiary structure of proteins (d) quaternary structure of proteins

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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.

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.