BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Amino Acid Side Chains (R-groups) Some are polar, but uncharged. Some are polar and normally have a positive or negative charge in solution. Amino acids with polar side chains are said to be hydrophilic (water loving) because they form weak interactions with water molecules.

Detailed explanation-2: -A hydrophilic R-group of an amino acid has the potential to form hydrogen bonds with water. Hydrophilic amino acids include those amino acids that are positively charged, negatively charged, or have a polar group as part of its R-group (such as a hydroxyl group).

Detailed explanation-3: -Functional groups can be classified as hydrophobic or hydrophilic based on their charge and polarity characteristics. The only hydrophobic group below is the methyl (CH 3start subscript, 3, end subscript) group, which is nonpolar.