OnlineCBT
Biology · BIOMOLECULES
हिन्दीConsider the following statements about protein structure: (A) In a polypeptide chain, the first amino acid is designated as the C-terminal amino acid. (B) In proteins, only right-handed helices are observed in the secondary structure. (C) Collagen is the most abundant protein in the animal world. (D) RuBisCO is the most abundant protein in the entire biosphere. (E) All proteins are homopolymers composed of repeating units of a single amino acid. Choose the correct answer from the options given below:
Correct answer · Option 3
(B), (C) and (D) only
Explanation
(B), (C), and (D) are correct. (A) is false as the first amino acid is N-terminal. (E) is false as proteins are heteropolymers, never homopolymers.
