BIOLOGY module 5

Question 1

What are the 3 photopigments found in the group of chlorophyll?

Answer 1

1. Chlorophyll A
2. Chlorophyll B
3. Carotene

Question 2

Which of the 3 photopigments found in the group of chlorophyll is the main one?

Answer 2

Chlorophyll A

Question 3

What colour are Chlorophyll A, Chlorophyll B and Carotene respectively?

Answer 3

Green, blue and orange

Question 4

What is a photosystem?

Answer 4

Clusters of photopigments and proteins that capture light energy

Question 5

Where are photosystems found?

Answer 5

In the thylakoid membrane

Question 6

What is found at the centre of a photosystem?

Answer 6

The reaction centre

Question 7

what is an advantage of the folded thylakoid membrane structure?

Answer 7

large surface area for the absorption of photons (quantity of light)

Question 8

Summarise what goes on in the light-dependent stage of photosynthesis?

Answer 8

Energy from sunlight is absorbed and used to form ATP, and hydrogen from water is used to reduce coenzyme NADP to NADPH