cell membrane & transport

Front

What is Facilitated Diffusion?

Back

Movement of materials from high to low concentration through a protein channel without the use of energy.

Front

What is Osmosis?

Back

The movement of water from an area of high concentration to an area of low concentration.

Front

What is Endocytosis?

Back

A type of cell transport where materials are engulfed by the cell membrane to enter the cell.

Front

What is the Hydrophilic portion of the cell membrane?

Back

The part of the cell membrane that is attracted to water, typically the phosphate heads of phospholipids.

Front

What is Passive Transport?

Back

The movement of substances across a cell membrane without the use of energy.

Front

What is Active Transport?

Back

The movement of substances against their concentration gradient, requiring energy.

Front

What is Simple Diffusion?

Back

The process by which small or nonpolar molecules move directly through the phospholipid bilayer from high to low concentration.

Front

What is the role of protein channels in cell transport?

Back

They facilitate the movement of larger or polar molecules across the cell membrane.

Front

What is Concentration Gradient?

Back

The difference in concentration of a substance across a space.

Front

What is the difference between Passive and Active Transport?

Back

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