Diffusion

Question 0

Diffusion is the…?

Answer 0

Spreading out of the particles of a gas, or of any substance in solution

Question 1

Molecules in gases and liquids move around randomly because of the ______ they have

Answer 1

Energy

Question 2

What does the net movement into or out of cells depend on?

Answer 2

The concentration of the particles on each side of the cell membrane

Question 3

Because the particles move randomly, there will be a net (overall) movement from an area of high concentration to an area of low concentration
True or False?

Answer 3

True

Question 4

What is the difference between two areas called?

Answer 4

The concentration gradient

Question 5

The larger the difference in concentration, the ______ the rate of diffusion

Answer 5

Faster

Question 6

3 examples of diffusion?

Answer 6

The diffusion of oxygen into the cells of the body from the bloodstream as the cells are respiring

The diffusion of carbon dioxide into actively photosynthesising plant cells

The diffusion of simple sugars and amino acids from the gut through cell membranes