Identify the essential amino acids from the following

I. Leucine

II. Tyrosine

III. Cysteine

IV. Histidine

$$ \text { Which of the following represents nucleoside of RNA? } $$

$$ \text { Match the following } $$

The list given below contains essential amino acids that are basic $(X)$ and also non essential amino acids that are neutral $(Y) . X$ and $Y$, respectively are

I. Lysine

II. Alanine

III. Serine

IV. Arginine

V. Tyrosine