gas exchange

Question 1

why is the gas exchangr process needed for animals

Answer 1

to ensure that oxygen from the air enters the alveoli and passes into the blood capillares

Question 2

how IS gas exchange in the alveoli maintained

Answer 2

the curved shape of the alveoli
good blood supply
blood flow quick
thin walls
permeable cell membrane

Question 3

whats the function of the curved shape of the alveoli

Answer 3

for large surface area

Question 4

whats the function of a good supply in the alveoli

Answer 4

maintains a diffusion gradient

Question 5

whats the function of a thin cell wall in the alveoli

Answer 5

short diffusion gradient

Question 6

whats the function of a cell wall being permeable in a alveoli

Answer 6

allows gases to pass through

Question 7

whats the main gas exchange surface in leaves

Answer 7

spongy mesophyll cells these cells provide a large surface area for diffusion

Question 8

how does carbon dioxide diffuse into the PLANT cell

Answer 8

diffuses from the air outside into the air spaces
then to the spongy mesophyll cells
and the palisade mesophyll cells

Question 9

what is the opening and controlling of stomata controlled by

Answer 9

the guard cells and either side of the stomata