(a) What are non-essential amino acids?
(b) Name the heterocyclic N-containing base present only in DNA but not in RNA.
(c) Vitamin-C cannot be stored in the body. Give reason.

Name the base present only in DNA but not in RNA.

Name the base present only in DNA but not in RNA.

Name the nitrogen base present only in DNA not in RNA.

What are non-essential amino acids ? Name naturally occuring a-amino acid which is not optically active.

What are non - essential amino acids? Name naturally occurring cc - amino acid which is not optically active.

What are essential and non - essential amino acids ? Give examples.

(a) Write Haworth structure of maltose. (b)What are non-essential amino acids? Name naturally occuring amino acid which is not optically active. (c) Which vitamin deficiency causes the disease 'scurvy'?

(a) Write Haworth structure of "Lactose". (b) i) What are non-essential amino acids? ii) Write Zwitter ionic structure of "glycine". (c) Name the nitrogenous base present in RNA but not in DNA.

(a) How does benzene reacts with acetyl- chloride in the presence of anhydrous AlCl_(3) ? Give equation. (b) (i) Write general equation for esterification reaction. (ii) Name the product obtained when benzoic acid is heated with ammonia. (c) Name the reagent used in the Clemmensen reduction.