Topic 5A: Photosynthesis And Energy Supply

Question 1

Define phosphorylation

Answer 1

Adding phosphate to a molecule for example ADP is phosphorylated to ATP

Question 2

Define photophosphorylation

Answer 2

Adding phosphate to a molecule using light

Question 3

What is lysis?

Answer 3

The splitting of something

Question 4

What is Photolysis?

Answer 4

The splitting of a molecule using light

Question 5

What is hydrolysis?

Answer 5

The splitting of a molecule using water

Question 6

Without energy what would happen to animals or plants?(2)

Answer 6

– Biological processes would stop

– Plant/animal would die

Question 7

What does ATP stand for?

Answer 7

Adenosine triphosphate

Question 8

What is the enzyme which turns ADP + P into ATP?

Answer 8

ATP synthase

Question 9

What enzyme catalyse is the breakdown of ATP into ADP + P?

Answer 9

ATPase

Question 10

When ADP plus P is converted into ATP is energy used or released?

Answer 10

Used

Question 11

When ATP is converted into ADP plus P is energy released or used?

Answer 11

Released

Question 12

At what wavelength just photosystem one absorb at?

Answer 12

700 nm

Question 13

At what wavelength as photosystem to absorb light at?

Answer 13

680 nm

Question 14

What is the difference between cyclic photophosphorylation and non cyclic photophosphorylation?

Answer 14

In c photo only ps1 used and electrons arene passed onto NADP

– Only produce a small amounts of ATP