Which of the following functional groups is hydrophobic Sele

Which of the following functional groups is hydrophobic? Select one: a. methyl b. phosphoryl c. hydroxyl d. carboxyl e. amino

Solution

ANS: A. Methyl.

Hydrophobic interactions: The hydro carbons lack distinct charged regions, are insoluble in water and cluster together.

Methyl functional group contains CH3 side chain, so it is hydrophobic.

Wrong answers:

B. Phosphoryl functional group contains OPO3 -2 side chain.

C. Hydroxyl functional group contains OH side chain.

D. Carboxyl functional group contains COOH side chain.

E. Amino functional group contains NH2 side chain.

So these four functional group B, C, D, E Are hydrophilic.