Diffusion

Question 1

What do animal and plant cells need to survive and what are their waste products?

Answer 1

animal and plant cells need oxygen to survive, whereas, one of their waste products which they don’t need is carbon dioxide

Question 2

What is a cell membrane and what does it do?

Answer 2

a cell membrane has little holes in it so small molecules can go through it

Question 3

what is diffusion?

Answer 3

diffusion is when a substance moves from a high concentration to a low concentration through the cell membrane

Question 4

what do cells need for aerobic respiration?

Answer 4

oxygen

Question 5

what does the blood carry in a human body?

Answer 5

oxygen and glucose

Question 6

why do the cells use up the oxygen and glucose in the body?

Answer 6

so the concentration becomes higher than in the cells

Question 7

what happens when oxygen and glucose diffuse out of the blood?

Answer 7

they go into the cells

Question 8

what waste product do cells produce that they need to get rid off?

Answer 8

carbon dioxide

Question 9

what is the carbon dioxide concentration in the cells?

Answer 9

its higher than the blood cells flowing around them

Question 10

what happens when carbon dioxide diffuses out of the blood cells and into the blood?

Answer 10

the blood then carry’s it into the lungs and then it will be breathed out

Question 11

what is it called when plants take in carbon dioxide to make food for the leaves and the plant?

Answer 11

photosynthesis

Question 12

is the concentration of carbon dioxide higher outside of a leaf than the air spaces inside the leaf?

Answer 12

YES

Question 13

how does carbon dioxide move into a leaf?

Answer 13

diffusion

Question 14

what happens when it diffuses?

Answer 14

the plants cells are diffused and able to do photosynthesis