Which is the $C$-terminal residue in glycyl alanine?

Accumulation of which of the following molecules in the muscles occurs as a result of vigorous exercise?

$A$ short peptide on complete hydrolysis produces $3$ moles of glycine $(G)$,$2$ moles of leucine $(L)$ and $2$ moles of valine $(V)$ per mole of peptide. The number of peptide linkages in it are $..............$.

The total number of isomeric linear dipeptides which can be synthesised from racemic alanine is

Which of the following basic amino acids is the least basic?

$A$ tetrapeptide has a $-COOH$ group on alanine. This produces glycine $(Gly)$,valine $(Val)$,phenylalanine $(Phe)$,and alanine $(Ala)$ on complete hydrolysis. For this tetrapeptide,the number of possible sequences (primary structures) with the $-NH_2$ group attached to a chiral center is: