BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Polar amino acids are hydrophilic, meaning that their side chains interact strongly with water.

Detailed explanation-2: -Aliphatic R groups are nonpolar and hydrophobic. Hydrophobicity increases with increasing number of C atoms in the hydrocarbon chain. Although these amino acids prefer to remain inside protein molecules, alanine and glycine are ambivalent, meaning that they can be inside or outside the protein molecule.

Detailed explanation-3: -In contrast, polar amino acids have hydrophilic side chains, which means they’re actually attracted to water and participate in hydrogen bonding with the highly polar water molecules.

Detailed explanation-4: -The R-groups of hydrophilic amino acids contain electronegative atoms like O and N. Some amino acids are non-polar (hydrophobic) because their side chains are made up mostly of hydrocarbon chains.