Question

Which is not true statement

• A. α-carbon of α-amino acid is asymmetric
• B. All proteins are found in L-form
• C. Human body can synthesize all proteins they need
• D. At pH = 7 both amino and carboxylic groups exist in ionised form

Answer 1

Answer: (B)

All proteins are found in L-form

Answer 2

The correct option is (B) : All proteins are found in L-form

Only the amino acids, which make up monomer units of protein, are present in D and L forms. Proteins can take the following shapes and forms.- FormsShape: Fibrous shape (1) Secondary (2) Globular shape (2) Primary (3) Tertiary (4)Quaternary Proteins do not exist in L form, hence this statement is false.