Bio - Unit 4 Review (Cell Membrane and Transport) 23

Front

What happens to a cell when less water moves into it than out of it?

Back

The cell will become smaller.

Front

What term describes the nonpolar nature of the tails of phospholipids?

Back

Hydrophobic

Front

What type of macromolecule primarily makes up the cell membrane?

Back

Phospholipid

Front

What organelle regulates materials entering and leaving the cell?

Back

Cell Membrane

Front

What is the process called when materials are expelled from a cell?

Back

Exocytosis

Front

What is the primary function of the cell membrane?

Back

To protect the cell and regulate what enters and leaves.

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy, while active transport does.

Front

What is diffusion?

Back

The movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is endocytosis?

Back

The process by which cells take in substances by engulfing them.