Photosynthesis

Question 1

Describe where photosynthesis takes place

Answer 1

Happens in the leaves of a plant
= leaves contain chlorophyll
= can absorb light energy

Question 2

Describe stages of photosynthesis

Answer 2

• plant takes co2 and water into leaf
• light energy absorbed by chlorophyll
• energy used to covert co2 and water into glucose
  = oxygen also produced

Question 3

Word equation of photosynthesis

Answer 3

Carbon dioxide+water
= glucose+oxygen

Question 4

What happens if light intensity increased

Answer 4

Rate of photosynthesis increases
= tells us light intensity was limiting

Question 5

Factors affecting rate of photosynthesis

Answer 5

• amount of chlorophyll in the leaf
  = if not enough leaves trap less light energy
  = lower rate of photosynthesis
• temperature
  = as temp increases enzymes in photosynthesis work faster
  = rate increases

Question 6

Use of glucose produced

Answer 6

• Release energy in respiration
• Produce starch
  = starch can be converted back to glucose by plant when needed
  Produce amino acids
  = used to synthesise proteins

Question 7

How do plants make amino acids

Answer 7

Plants need to absorb nitrate ions from the soil