Cell Membrane and Transport LE

Front

What is the function of a cell’s selectively permeable membrane?

Back

It regulates what materials enter and leave the cell.

Front

What is active transport?

Back

Active transport is the movement of substances across a cell membrane that requires energy.

Front

What does active transport require to function?

Back

ATP (adenosine triphosphate) is required for active transport.

Front

How does active transport move materials?

Back

Active transport moves materials from low to high concentration.

Front

What is passive transport?

Back

Passive transport is the movement of solutes with the concentration gradient without the use of energy.

Front

What is the main component of the cell membrane?

Back

Most of the cell membrane is made of lipids.

Front

What is the difference between active and passive transport?

Back

Active transport requires energy and moves substances against the concentration gradient, while passive transport does not require energy and moves substances with the concentration gradient.

Front

What is the concentration gradient?

Back

The concentration gradient is the difference in the concentration of a substance across a space.

Front

What role do proteins play in the cell membrane?

Back

Proteins in the cell membrane help with transport, communication, and structural support.

Front

What is osmosis?

Back

Osmosis is the passive transport of water across a selectively permeable membrane.