Cell Membrane Review

Front

What is the function of the plasma membrane?

Back

To regulate what enters and leaves the cell.

Front

What is endocytosis?

Back

A type of active transport that brings particles into a cell when the cell membrane encloses a particle to make a vesicle.

Front

In passive transport, the concentration gradient goes from...

Back

High to low.

Front

What is active transport?

Back

The cellular process in which materials are moved across a membrane from an area of low concentration to an area of high concentration.

Front

What are phospholipids made up of?

Back

Hydrophilic head and hydrophobic tail.

Front

What is the role of the plasma membrane in a cell?

Back

It acts as a barrier that regulates the movement of substances in and out of the cell.

Front

Define diffusion.

Back

The process by which molecules spread from areas of high concentration to areas of low concentration.

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 requires energy to move substances against their concentration gradient.

Front

What is a vesicle?

Back

A small membrane-bound sac that transports substances within a cell.