Cell Transport GEN

Front

What is osmosis?

Back

Osmosis is the movement of water molecules through a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is passive transport?

Back

Passive transport is the movement of molecules across a cell membrane without the use of energy, typically moving from an area of high concentration to an area of low concentration.

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane against their concentration gradient, requiring energy (usually in the form of ATP).

Front

What regulates what enters and leaves a cell?

Back

The cell membrane regulates what enters and leaves a cell.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses transport proteins to help move molecules across the cell membrane.

Front

What is the difference between diffusion and osmosis?

Back

Diffusion is the movement of solute particles from an area of high concentration to an area of low concentration, while osmosis specifically refers to the movement of water.

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane is a barrier that allows certain substances to pass through while blocking others.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, water moves out of the cell, causing it to shrink.

Front

What happens to a cell in a hypotonic solution?

Back

In a hypotonic solution, water moves into the cell, causing it to swell and potentially burst.

Front

What is the role of transport proteins in cell transport?

Back

Transport proteins assist in the movement of substances across the cell membrane, either by facilitating diffusion or by actively transporting molecules.