General
What is the overall equation of photosynthesis?
6CO2 + 6H2O + light energy --> C6H12O6 + 6O2
Where do the light reactions take place?
Thylakoid
Where does the Calvin Cycle take place?
Stroma
Which photosystem is working independently in cyclic electron flow?
PSI
What are the two alternative mechanisms to photosynthesis mentioned in class?
C4 and CAM
What is the name of the green pigment in chloroplasts?
Chlorophyll
How is O2 produced in the light reactions?
Splitting of water
What is the sugar product of the Calvin Cycle called?
G3P
Is NADP+ reduced by NADP+ Reductase in cyclic electron flow?
No
In the C4 Cycle, what compound is the 4C intermediate?
Malate
What is a stack of thylakoids called?
Granum
Which compound provides electrons to replenish PSII?
Water
How many cycles of the Calvin Cycle are needed to produce 1 G3P molecule?
Three
In cyclic electron flow, only which of our products is produced?
ATP
What is the mechanism of C4 plants?
Separate the locations of the reactions and C4 cycle provides CO2
Why does chlorophyll appear green?
Which type of chlorophyll pigment is present in PSI?
P700
What is the most abundant protein on earth?
Rubisco
Where do electrons from ferredoxin go in cyclic electron flow?
Plastoquinone (PQ)
What is the mechanism of CAM plants?
Open their stomata at night and store CO2 as malate
What is the source of electrons in a chlorophyll pigment (which electrons get excited)?
Electrons from Mg in porphyrin ring
Put these compounds in the correct order of electron flow:
PSI, NADP+ Reductase, ATP synthase, PSII, ETC #1
PSII, ETC #1, ATP synthase, PSI, NADP+ Reductase
Put these compounds in the order they appear in the Calvin Cycle:
1,3-bisphosphoglycerate
G3P
RuBP
3-phosphoglycerate
RuBP
3-phosphoglycerate
1,3-bisphosphoglycerate
G3P
Why would plants undergo cyclic electron flow?
Plant has enough NADPH and not enough ATP (because cyclic e- flow wastes less resources)
What makes photorespiration undesirable in plants?
The process is inefficient and wastes resources (slows down Calvin Cycle, uses ATP, releases CO2)