Question

the cell membrane around a cell forms a barrier that protects and regulates the cell. certain chemicals can pass through the plasma membrane because they have similar chemical properties as the membrane.
which best describes those that can pass through?
○ they are concentrated.
○ they are soluble.
○ they are diluted.
○ they are heated.

Explanation:

Cell membranes are primarily made of lipid (fatty) components. Substances that can pass through the membrane without specialized transport must be soluble in lipids (hydrophobic), matching the membrane's chemical properties. The other options (concentrated, diluted, heated) do not relate to the core chemical compatibility required for passive membrane passage.

Answer:

They are soluble.