Biology - Osmosis/Diffusion

Front

What is the process called when molecules move from an area of higher concentration to an area of lower concentration?

Back

Diffusion

Front

What term describes the movement of water across a selectively permeable membrane?

Back

Osmosis

Front

What is the main difference between passive transport and active transport?

Back

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

Front

What is endocytosis?

Back

A process in which a cell engulfs extracellular material through an inward folding of its plasma membrane.

Front

What type of transport involves the use of channel proteins?

Back

Facilitated Diffusion

Front

What does it mean if a membrane is described as permeable?

Back

It means that things can pass through it.

Front

What is the role of carrier proteins in cellular transport?

Back

Carrier proteins help transport substances across the cell membrane, often in facilitated diffusion.

Front

What is the difference between simple diffusion and facilitated diffusion?

Back

Simple diffusion occurs directly through the membrane, while facilitated diffusion requires specific transport proteins.

Front

What is the significance of concentration gradients in diffusion?

Back

Concentration gradients drive the movement of molecules from areas of high concentration to areas of low concentration.

Front

What is an example of a substance that moves across a cell membrane via osmosis?

Back

Water.