Passive Transport

It requires cell energy and moves substances from low to high concentration.

It does not require cell energy and moves substances from high to low concentration.

It requires cell energy and moves substances from high to low concentration.

It does not require cell energy and moves substances from low to high concentration.

Movement of molecules from high to low concentration

Movement of water through a membrane

Movement of molecules from low to high concentration

Movement of molecules only in plant cells

Hypotonic

Hypertonic

Isotonic

Plasmolysis

The concentration of solutes is the same inside and outside the cell.

Water moves equally in both directions across the membrane.

The cell gains water and swells.

There is no net change in cell size.

Hypotonic

Hypertonic

Isotonic

None of the above

Passive transport requires energy, while active transport does not.

Passive transport moves substances from low to high concentration, while active transport moves from high to low concentration.

Passive transport does not require energy, while active transport requires energy (ATP).

Passive transport only occurs in plants, while active transport only occurs in animals.