Topic 3 - Rate Of Photosynthesis

Question 1

what is a limiting factor?

Answer 1

something which stops photosynthesis from happening any faster

Question 2

what can limiting factors be?

Answer 2

light intensity, carbon dioxide concentration and temperature

Question 3

what do limiting factors depend on?

Answer 3

environmental conditions

Question 4

how does light intensity affect photosynthesis?

Answer 4

chlorophyll uses light energy to perform photosynthesis
if the light intensity is increased, the rate of photosynthesis will increase up to a point. beyond that, increasing light intensity won’t make a difference as light isn’t the limiting factor.

Question 5

how does carbon dioxide concentration affect photosynthesis?

Answer 5

carbon dioxide is needed for photosynthesis.
if the carbon dioxide concentration is increased, the rate of photosynthesis will increase up to a point. beyond that, increasing carbon dioxide concentration won’t make a difference as carbon dioxide concentration isn’t the limiting factor.

Question 6

how does temperature affect photosynthesis?

Answer 6

temperature affects the rate of photosynthesis as it affects the enzymes involved
as temperature increases, so does the rate of photosynthesis, up to a point.
if the temperature is too high, enzymes are denatured, decreasing the rate of photosynthesis.