Energy Supply 4.2

Question 1

What is ATP made from?

Answer 1

Adenine, ribose sugar, 2 phosphate molecules and an inorganic phosphate

Question 2

What catalyses ADP and Pi to ATP?

Answer 2

ATP synthase

Question 3

What catalyses ATP to ADP and Pi

Answer 3

ATPase

Question 4

Define metabolic pathways?

Answer 4

A series of small reactions controlled by enzymes

Question 5

Define phosphorylation…

Answer 5

Adding phosphate to a molecule

Question 6

Define photophosphorylation

Answer 6

Adding phosphate to a molecule using light

Question 7

Define photolysis

Answer 7

The splitting of a molecule using light

Question 8

Define hydrolysis….

Answer 8

The splitting of a molecule using water

Question 9

What is a coenzyme?

Answer 9

A molecule that AIDS the function of an enzyme, by transferring a chemical group from one molecule to another.
E.g. NADP, NAD, FAD

Question 10

What is a photosystem made out of?

Answer 10

Pigment (chlorophyll A,B and carotene) + protein

Question 11

What is the Light dependent reaction?

Answer 11

Takes place in thylakoid membranes
Light absorbed by photosynthetic pigment
Light energy used to make ATP from ADP and Pi. Also NADPH is made

Question 12

What is the light independent reaction?

Answer 12

Calvin cycle
Takes place in stroma
ATP and NADPH used (from light dependent) to make glucose from CO2

Question 13

Equation for photosynthesis…

Answer 13

6CO2 + 6H2O + energy —> C6H12O6 + 6O2