Question

molecules and the plasma membrane
which molecules are capable of directly penetrating quickly through the plasma membrane of cells? select all that apply.
lipids
hydrophobic molecules
gases
water

Explanation:

The plasma membrane is a phospholipid bilayer. Lipids (due to the lipid - based nature of the membrane), hydrophobic molecules (can dissolve in the lipid part of the membrane), and gases (small and non - polar) can pass directly through. Water, although polar, can pass through to some extent (but more slowly compared to the others in the context of "directly penetrating quickly").

Answer:

Lipids, Hydrophobic molecules, Gases