Cell Membrane and Transport

Front

What are the two parts of a phospholipid called?

Back

Hydrophilic Head, Hydrophobic Tail

Front

What best describes the cell membrane?

Back

The protective outer layer that controls what enters and leaves the cell.

Front

What is the general name for movement of substances across cell membranes without energy input?

Back

Passive transport

Front

What type of transport is represented by the movement of substances against their concentration gradient?

Back

Active transport

Front

Does passive transport use energy?

Back

No

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.

Front

What is the role of the cell membrane?

Back

To protect the cell and regulate the movement of substances in and out.

Front

What is the difference between active and passive transport?

Back

Active transport requires energy, while passive transport does not.

Front

What is facilitated diffusion?

Back

A type of passive transport that uses transport proteins to move molecules across the membrane.

Front

What is a concentration gradient?

Back

A difference in the concentration of a substance across a space.