2% of the total cellular mass is _____

Which among the following is incorrect about different saccharides?

Which of these components of nucleotides is heterocyclic?

Identify the labeled portion of the peptide.

The association of which of these with apoenzymes is transient?

What makes up the primary structure of proteins?

What is the other name of α-amino acids?

Which of the following proteins is the source of essential amino acids?