photosynthesis - limiting factors

Question 1

what are the 4 factors that affect rate of photosynthesis?

Answer 1

temperature, light intensity, concentration of carbon dioxide and amount of chlorophyll in chloroplast

Question 2

how does an increase in temperature affect rate of photosynthesis?

Answer 2

causes enzymes to work faster

Question 3

if temperature is too high, what happens?

Answer 3

enzymes can denature

Question 4

if temperature is too low?

Answer 4

enzymes do not work at all

Question 5

how does an increase in light intensity affect rate of photosynthesis

Answer 5

increases rate of photosynthesis, because more light energy is absorbed by chloroplasts

Question 6

how does an increase in concentration of carbon dioxide affect rate of photosynthesis?

Answer 6

increases rate of photosynthesis, because more carbon dioxide particles in same volume, meaning successful collisions are more frequent

Question 7

how does an increase in amount of chlorophyll in chloroplasts affect rate of photosynthesis?

Answer 7

increases rate of photosynthesis, because more chlorophyll means chloroplasts can absorb more light energy