LDR

Question 1

ATP and NADPH

Answer 1

transient intermediates of REDOX reactions

Question 2

PS2 components

Answer 2

20 subunits (99+ cofactors)
35 chlorophyll, 12 B-carotenes
light harvesting complex, reaction centre, e- acceptor

Question 3

P680

Answer 3

P680 -> P680+ when photon absorbed
Chlorophyll molecule
site of photolysis

Question 4

photolysis

Answer 4

2H2O —> O2 + 4H+ + 4e-
provides e- for ETC and H+ for pmf
needs 2 photons to split H2O, 1 photon to excite e-, 4 photons to release O2 (2 photons per O)

Question 5

1st carrier in ETC

Answer 5

pheophytin

PS2

Question 6

2nd carrier in ETC

Answer 6

plastoquinone

H+ pump

Question 7

3rd carrier in ETC

Answer 7

cytochrome b6f

H+ pump

Question 8

PS1 components

Answer 8

more complex than PS2
proteins, lipids, cofactors
110+ cofactors/ pigments

Question 9

P700

Answer 9

P700 -> P700+ when photon absorbed

e- from plastocyanin to ferredoxin NADP reductase

Question 10

4th carrier in ETC

Answer 10

plastcocyanin

Question 11

ferredoxin NADP reductase

Answer 11

e- from P700+
reducing agent
NADP+ -> NADPH (reduced)

Question 12

ECT equation

Answer 12

2H2O + light E —> O2 + 4ATP + 2NADPH

Question 13

pmf

Answer 13

proton motive force
generated by photolysis and ETC
used to spin domain in ATP synthase
ADP + Pi —> ATP