Cell Transport

Front

What is the role of cholesterols in cell membranes?

Back

Cholesterols increase the fluidity of the membrane, allowing for better movement of proteins and lipids.

Front

What are the two main types of cell transport?

Back

Passive transport and Active transport.

Front

What is active transport?

Back

Active transport is the movement of materials across a membrane from low to high concentration, requiring energy.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process of molecules diffusing through a protein channel along the concentration gradient.

Front

What is diffusion?

Back

Diffusion is the movement of molecules from an area of high concentration to an area of low concentration.

Front

What is passive transport?

Back

Passive transport is the movement of substances 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.

Front

What is the concentration gradient?

Back

The concentration gradient is the difference in concentration of a substance across a space.

Front

What is the difference between active and passive transport?

Back

Active transport requires energy to move substances against the concentration gradient, while passive transport does not.

Front

What are aquaporins?

Back

Aquaporins are specialized protein channels that facilitate the transport of water across cell membranes.