Week 3 Practice Flashcard - Diffusion and Osmosis

Front

What is the movement of water through a semi-permeable membrane called?

Back

Osmosis

Front

Is the cell membrane semi-permeable, allowing some molecules to pass while blocking others?

Back

True

Front

What term describes the balance maintained between the cell and its environment by controlling what goes in and out?

Back

Homeostasis

Front

What is it called when molecules have reached an equal balance in concentration?

Back

Equilibrium

Front

Can small molecules like oxygen, carbon dioxide, starch, and protein easily pass through the cell membrane?

Back

False

Front

Define diffusion.

Back

The process by which molecules spread from areas of high concentration to areas of low concentration.

Front

What is the primary function of the cell membrane?

Back

To regulate the movement of substances in and out of the cell.

Front

What is the difference between osmosis and diffusion?

Back

Osmosis specifically refers to the movement of water, while diffusion refers to the movement of any molecules.

Front

What happens to a cell in a hypertonic solution?

Back

The cell loses water and may shrink.

Front

What is a hypotonic solution?

Back

A solution with a lower concentration of solutes compared to the inside of the cell, causing water to enter the cell.