Photosynthesis

Question 1

What form of photosynthesis do most plants use?

Answer 1

C3 photosynthesis.

Question 2

Which enzyme catalyses the reaction of C3 photosynthesis?

Answer 2

Ribulose bisphosphate carboxylase (rubisco)

Question 3

Why do plants in hot, arid environments use C4 photosynthesis?

Answer 3

When plants close their stomata in arid conditions, oxygen competes more successfully with CO2 for rubisco, which reduces the efficiency of photosynthesis.

Question 4

What are the two basic steps of photosynthesis?

Answer 4

Light Dependent & Independent Reactions.

Question 5

What is the Light-Dependent Reaction?

Answer 5

Chlorophyll absorbs light energy, transferring some of it to create ATP and reduced NADP, using photolysis.

Question 6

What is given off as a waste product of the Light-Dependent reaction

Answer 6

Oxygen

Question 7

What is the Light-Independent Reaction?

Answer 7

ATP and Reduced NADP are involved in using CO2 to create a carbohydrate.