Cell Transport

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that allows molecules to cross the cell membrane with the help of channel proteins.

Front

What type of proteins are involved in facilitated diffusion?

Back

Channel proteins are involved in facilitated diffusion.

Front

What does it mean for a solution to be hypertonic to a cell?

Back

A hypertonic solution has a higher amount of solute compared to the cell.

Front

What does it mean for a solution to be hypotonic to a cell?

Back

A hypotonic solution has a lower amount of solute compared to the cell.

Front

What is active transport?

Back

Active transport is the process by which cells use energy to transport materials across the cell membrane against their concentration gradient.

Front

What is passive transport?

Back

Passive transport is the movement of molecules across a cell membrane without the use of energy, typically along the concentration gradient.

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is the difference between simple diffusion and facilitated diffusion?

Back

Simple diffusion involves the movement of small or nonpolar molecules directly through the lipid bilayer, while facilitated diffusion requires specific proteins to help larger or polar molecules cross the membrane.

Front

What role do carrier proteins play in cell transport?

Back

Carrier proteins assist in the transport of substances across the cell membrane, often in facilitated diffusion and active transport.

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.