Hemoglobin is

Vitamin $B_{12}B\_\{12\}$ contains

A peptide bond is

Fructose reduces tollen’s reagent due to

The synthesis of daughter DNA from parent DNA is called :

RNA and DNA are chiral molecules. Their chirality is due to

In living systems the function of enzyme is to

Which of the following has maximum laevorotation

D–glucose and D–mannose are

Which of the following hexoses will form the same osazone when treated with excess phenyl hydrazine