Cell Transport Practice

Front

What is osmosis?

Back

Osmosis is the movement of water across a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What does permeable mean?

Back

Permeable means that things can pass through.

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 the process by which molecules are transported across a membrane with the help of a protein, without the use of energy.

Front

What is diffusion?

Back

Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is active transport?

Back

Active transport is the movement of molecules across a membrane against their concentration gradient, requiring energy.

Front

What is a semi-permeable membrane?

Back

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

Front

What is the difference between osmosis and diffusion?

Back

Osmosis specifically refers to the movement of water, while diffusion refers to the movement of any type of molecules.

Front

What role do proteins play in facilitated diffusion?

Back

Proteins act as channels or carriers to help transport molecules across the cell membrane.

Front

What is concentration gradient?

Back

A concentration gradient is the difference in the concentration of a substance between two areas.