Question

lysine alanine serine arginine which amino acid is most likely to be found in a region of a protein that interacts with the hydrophobic interior of the cell membrane? arginine alanine serine lysine incorrect serine has a partial charges on its r group. can partial charges interact with water?

Explanation:

Hydrophobic amino - acids interact with the hydrophobic interior of the cell membrane. Alanine has a non - polar methyl ($-CH_3$) R - group, making it hydrophobic. Arginine and lysine have charged R - groups and are hydrophilic. Serine has a polar R - group with a hydroxyl ($-OH$) and is also hydrophilic.

Answer:

B. alanine