ps

Question 1

light reactions make

Answer 1

ATP and NADPH

Question 2

dark reactions use what to run what

Answer 2

ATP and NADPH to turn pentose phosphate and glycolysis in reverse

Question 3

E = hc/gamma what are all the variables

Answer 3

h = planck’s constant
c = velocity of light
gamma = wavelength

Question 4

electron transfer

Answer 4

chemical breakdown by ejection of the excited electron

Question 5

resonance transfer

Answer 5

transfer of energy to adjacent molecule with same energy gap

Question 6

why ultraviolet light bad

Answer 6

energy too high, will break covalent bonds

Question 7

why infrared bad

Answer 7

energy too low, bond rotation and vibration

Question 8

role of accessory pigment

Answer 8

can harvest more light in the EMS

Question 9

chlorophylls

Answer 9

magnesium, looks similar to heme-like porphyrin ring

Question 10

carotenoids

Answer 10

long chian with double bonds flanked by two rings
isoprenoid unit

Question 11

phycobilins

Answer 11

open chain tetrapyrolls
similar to unwound chlorophylls

Question 12

phytol side chain

Answer 12

chlorophyll, anchor in membrane

Question 13

what starts e- flow

Answer 13

light absorption

Question 14

what type of transfer is antenna molecule passing energy to neighboring chlorophyll molecules

Answer 14

resonance energy transfer

Question 15

what type of transfer is privileged chlorophyll to electron acceptor

Answer 15

electron transfer

Question 16

H+ pump

Answer 16

cytochrome b6f complex

Question 17

1 e- carriers

Answer 17

ferredoxin
plastocyanin

Question 18

the etc pumps protons from

Answer 18

stroma to lumen

Question 19

how many photons per electron

Answer 19

one

Question 20

what is reduced by e- transferred from chlorophyll

Answer 20

ferredoxin

Question 21

what refills the reaction center “special pair” of chlorophyll molecules

Answer 21

plastocyanin

Question 22

ps1 cylic flow

Answer 22

light -> p700 -> fd -> cytb6f -> plastocyanin and pumps protons

Question 23

how many protons pumped per photon cytb6f

Answer 23

2

Question 24

ps1 wavelength at which chromophore absorbs max

Answer 24

p700

Question 25

input for cytochrome b6f

Answer 25

plastoquinone PQH2 (PSII) or 2 ferredoxin fd (ps1)

Question 26

output for cytochrome b6f

Answer 26

2 molecules of plastocyanin (cu) 1 e- carrier

Question 27

what is cytochrome b6f homologous to

Answer 27

complex 3 of mitochondiral repiratory chain

Question 28

how are e- replaced in noncylic flow

Answer 28

ps2 uses h2o as e- source to replensih cyt b6f

Question 29

ps2 wavelength at which chromophore absorbs max

Answer 29

p680

Question 30

what helps catalyze splitting of water in ps2

Answer 30

mn4 clutster and tyrosine

Question 31

ps2 equation

Answer 31

2h2o -> 4H+ + 4e- + o2

Question 32

ps1 + ps2 equation

Answer 32

2 nadp + 3 adp + 3 hpo42- + H + 8 photons -> o2 + 3 atp + 2 NADPH + h2o

Question 33

how many protons pumped per photon in ps2

Answer 33

1

Question 34

p side in thylakoid

Answer 34

lumen

Question 35

n side in thylakoid

Answer 35

stroma

Question 36

rubscio type of enzyme

Answer 36

carboxylase/oxygenase

Question 37

ruscio components

Answer 37

Mg2+ complexed to lysine 201 carbamate

Question 38

rubisco mechanism

Answer 38

enediolate intermediate forms new c-c bond

Question 39

rubisco octomer

Answer 39

cooperativity

Question 40

hexose production equation

Answer 40

6 RuBP + 6 CO2 -> 12 (GAP or DHAP)

Question 41

how many gap and dhap are siphoned off to regenerate rubp

Answer 41

4 gap and 2 dhap

Question 42

what is needed in regenerating rubp

Answer 42

atp

Question 43

is there redox in regenerating rubp

Answer 43

no, shuffling carbons

Question 44

dark reactions equation

Answer 44

6 CO2 + 18 ATP + 12 NADPH + 12 H2O -> C6H12O6 + 18 ADP + 18 HPO42- +12 NADP + 6H

Question 45

net reaction of photosynthesis

Answer 45

6 co2 + 6 h2o _ 48 photons -> c6h12o6 + 6 o2

Question 46

photorespiration where

Answer 46

peroxisome via detour thorugh mitochondrion

Question 47

photorespiration mechanism

Answer 47

reverse of carbon fixation (uses o2 and makes co2) wasterd rubp must be regenerated requires atp input

Question 48

what have c4 plants done

Answer 48

evolved way to concentrate co2 to minimize side reactions

Question 49

rubisco stimulated by

Answer 49

high pH co2 and mg2+ when reduced fd build up, reduces disulfies to activate DR enzymes

Question 50

mg2+ moves from ____ to _____

Answer 50

lumen to stroma

Question 51

H+ move from _____to ______

Answer 51

stroma to lumen

Question 52

reverse of what is in rubisco mechanism

Answer 52

beta carboxylation

Question 53

logic of calvin ycle

Answer 53

need to reduce C from CO2 to normal carb oxygen state

Question 54

enzymes involved in regenerating rubp

Answer 54

transketolases and transaldolases

Question 55

cyclic flow used

Answer 55

to pump protons

Question 56

how manhy protons pumped in ps1

Answer 56

2H+ per photon

Question 57

noncylic flow used

Answer 57

for biosynthesis