2. Cell Structure & Function

Front

What is a unicellular organism?

Back

An organism that consists of a single cell, such as bacteria.

Front

What happens to a cell when water moves into it?

Back

The cell swells.

Front

Does facilitated diffusion require energy?

Back

No, facilitated diffusion does not require energy.

Front

What is facilitated diffusion?

Back

A process where particles move from high concentration to low concentration using a carrier protein, without the use of energy.

Front

What is active transport?

Back

The movement of particles against their concentration gradient, requiring energy.

Front

What is osmosis?

Back

The movement of water across a semipermeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is the function of the cell membrane?

Back

To control the movement of materials into and out of the cell.

Front

What is the difference between passive and active transport?

Back

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

Front

What is a concentration gradient?

Back

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

Front

What is the role of carrier proteins in facilitated diffusion?

Back

Carrier proteins help transport substances across the cell membrane without using energy.