Show:
General
Light-Dependent Reactions
Calvin Cycle
Cyclic Electron Flow
Alternative Mechanisms
100

What is the overall equation of photosynthesis?

6CO­2 + 6H2O + light energy --> C6H­12O6 + 6O2

100

Where do the light reactions take place?

Thylakoid

100

Where does the Calvin Cycle take place?

Stroma

100

Which photosystem is working independently in cyclic electron flow?

PSI

100

What are the two alternative mechanisms to photosynthesis mentioned in class?

C4 and CAM

200

What is the name of the green pigment in chloroplasts?

Chlorophyll

200

How is O2 produced in the light reactions?

Splitting of water

200

What is the sugar product of the Calvin Cycle called?

G3P

200

Is NADP+ reduced by NADP+ Reductase in cyclic electron flow?

No

200

In the C4 Cycle, what compound is the 4C intermediate?

Malate

300

What is a stack of thylakoids called?

Granum

300

Which compound provides electrons to replenish PSII?

Water

300

How many cycles of the Calvin Cycle are needed to produce 1 G3P molecule?

Three

300

In cyclic electron flow, only which of our products is produced?

ATP

300

What is the mechanism of C4 plants?

Separate the locations of the reactions and C4 cycle provides CO2

400

Why does chlorophyll appear green?

It absorbs red and blue wavelengths, but reflects green wavelengths
400

Which type of chlorophyll pigment is present in PSI?

P700

400

What is the most abundant protein on earth?

Rubisco

400

Where do electrons from ferredoxin go in cyclic electron flow?

Plastoquinone (PQ)

400

What is the mechanism of CAM plants?

Open their stomata at night and store CO2 as malate

500

What is the source of electrons in a chlorophyll pigment (which electrons get excited)?

Electrons from Mg in porphyrin ring

500

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

500

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

500

Why would plants undergo cyclic electron flow?

Plant has enough NADPH and not enough ATP (because cyclic e- flow wastes less resources)

500

What makes photorespiration undesirable in plants?

The process is inefficient and wastes resources (slows down Calvin Cycle, uses ATP, releases CO2)