Question

Read the following statements and select the correct option.

1. In quaternary structure, the peptide chains are much looped, twisted, and folded back on themselves due to formation of hydrogen bonds.
2. When a protein has more than two polypeptide subunits their arrangement in space is called secondary structure.

Options

• Statement (i) is correct.

• Statement (ii) is correct.

• Both the statements (i) and (ii) are correct.

• Both the statements (i) and (ii) are incorrect.

Answer 1

Both the statements (i) and (ii) are incorrect.

Explanation: 

1. In tertiary structure, the peptide chains are much looped, twisted, and folded back on themselves due to the formation of disulfide bonds.

2. When a protein contains more than two amino acids. The organization of polypeptide subunits in the term "quaternary structure" refers to the structure of space.