Cell Transport Amoeba Sisters

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy. It relies on the concentration gradient.

Front

What is osmosis?

Back

Osmosis is a type of passive transport where water molecules move across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is active transport?

Back

Active transport is the movement of substances across a cell membrane that requires energy, usually in the form of ATP, to move substances against their concentration gradient.

Front

What is equilibrium in the context of cell transport?

Back

Equilibrium is reached when the concentration of a substance is equal on both sides of a membrane, resulting in no net movement of that substance.

Front

Does passive transport require energy?

Back

No, passive transport does not require energy; it occurs naturally due to concentration differences.

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from areas of high concentration to areas of low concentration until they are evenly distributed.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses protein channels to help move substances across the cell membrane.

Front

What is an example of a substance that uses osmosis?

Back

Water is the primary substance that uses osmosis to move across cell membranes.

Front

What is the role of ATP in active transport?

Back

ATP provides the energy needed for active transport to move substances against their concentration gradient.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, water moves out of the cell, causing it to shrink.