Question

cholesterol is a molecule in animal cell membranes. since cholesterol is hydrophobic, where is it most likely to occur? a. region x b. region y

Explanation:

The cell membrane's structure has a phospholipid bilayer. The phospholipids have hydrophilic heads (region X, the outer parts) and hydrophobic tails (region Y, the inner part between the two layers of tails). Cholesterol is hydrophobic, so it will be in the hydrophobic region, which is region Y.

Answer:

B. region Y