Cell Membrane and Transport LE

Front

What is the cell membrane primarily made of?

Back

Lipids

Front

What is the function of the cell membrane?

Back

It regulates what materials enter and leave the cell.

Front

What type of transport does not require energy?

Back

Passive Transport

Front

What is active transport?

Back

Active transport requires energy (ATP) to move materials against the concentration gradient.

Front

What happens to a cell in a salt water solution?

Back

The cell shrinks due to water moving out of the cell.

Front

Define selectively permeable membrane.

Back

A membrane that allows certain substances to pass while blocking others.

Front

What is the concentration gradient?

Back

The difference in concentration of a substance across a space.

Front

What is osmosis?

Back

The movement of water across a selectively permeable membrane.

Front

What is the role of proteins in the cell membrane?

Back

Proteins help transport materials and communicate signals.

Front

What is diffusion?

Back

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