Simple Diffusion and Cell Membrane

Front

What is OSMOSIS?

Back

Diffusion of WATER across a selectively permeable membrane.

Front

In active transport, material moves from:

Back

low to high concentration.

Front

What is diffusion in cells?

Back

The process by which molecules move from a region of high concentration to a region of low concentration.

Front

What does hypertonic mean in relation to solute concentration?

Back

A solution with a higher concentration of solute compared to another solution.

Front

What is the main component of the cell membrane?

Back

Lipids.

Front

What is a selectively permeable membrane?

Back

A membrane that allows certain molecules to pass through while blocking others.

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy, while active transport requires energy to move substances against their concentration gradient.

Front

What is a concentration gradient?

Back

A difference in the concentration of a substance across a space.

Front

What is the role of proteins in the cell membrane?

Back

Proteins assist in transport, act as receptors, and provide structural support.

Front

What is the process of endocytosis?

Back

The process by which cells engulf substances from the outside environment.