Which of the following statement is false?

Options

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

Answer

B

Explanation

All proteins are not found in L-form but they may be present in form of D or L.