Cells and Diffusion

Question 1

Diffusion

Answer 1

Cells obtain their nutrients and remove their wastes by a process called

Question 2

What is Diffusion

Answer 2

Diffusion is when molecules move from an area of high concentration to
an area of low-concentration

Question 3

Examples of diffusion:

Answer 3

Movement of substances in and out of amoeba
* Movement of gases (oxygen and carbon dioxide) in and out of lung cells
* Movement of water in and out of plant root hair cells

Question 4

The rate of diffusion can vary due to a number of factors such as:

Answer 4

• Temperature
• Concentration gradient (the difference between high and low concentrations)
• the surface area of the cell.
• the volume of the cell
• the density of the medium moving by diffusion