Question

how could you change this molecule to make it soluble in the hydrophobic region of the cell membrane? select all that apply.

replace the o in box 1 with two ch₃ groups
replace the h in box 2 with a ch₃ group
replace the o in box 1 with ohs
replace the o in box 1 with hs
no changes needed, this molecule is already soluble in the cell membrane.
replace the h in box 2 with an oh

Explanation:

Hydrophobic regions of the cell membrane interact well with non - polar or less polar molecules.

• Replacing the \(O\) in box 1 (which is part of a polar carbonyl group \((C = O)\)) with two \(CH_3\) groups (non - polar) would make the molecule more non - polar.
• Replacing the \(O\) in box 1 with \(H\)s (making it a hydrocarbon - like structure) would also make the molecule more non - polar.
• Replacing the \(H\) in box 2 with a \(CH_3\) group (non - polar) would contribute to making the molecule more non - polar.
• Replacing with \(OH\)s (polar) or leaving the \(O\) (as in the original carbonyl group, polar) would make the molecule more polar (less likely to be soluble in the hydrophobic region).

Answer:

• Replace the \(O\) in box 1 with two \(CH_3\) groups
• Replace the \(H\) in box 2 with a \(CH_3\) group
• Replace the \(O\) in box 1 with \(H\)s