The protein that is a structural material is

The $\alpha$-helix structure is found in which of the following?

Which type of biomolecules have some structural similarity with synthetic polyamides? What is this similarity?

Among the $\alpha$-amino acids - threonine,tyrosine,methionine,arginine and tryptophan,those which contain an aromatic group in their side chain are

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

The acid showing salt-like character in aqueous solution is