Cell Transport

Front

What are cell membranes primarily composed of?

Back

Phospholipid bilayers.

Front

What term describes a cell membrane that allows specific materials to pass through while blocking others?

Back

Selectively permeable.

Front

What happens to a cell with a 2% concentration of solute when placed in water with a 2% concentration of solute?

Back

The cell will stay the same size.

Front

What is the form of passive transport that is aided by a protein embedded in a cellular membrane?

Back

Facilitated diffusion.

Front

What is the process called when a cellular membrane envelopes material to take it into the cell?

Back

Endocytosis.

Front

What is the main function of the cell membrane?

Back

To protect the cell and regulate what enters and exits.

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 a concentration gradient?

Back

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

Front

What is the role of proteins in facilitated diffusion?

Back

They help transport substances across the cell membrane without using energy.