Carbon fixation
Reduction Phase
Regeneration
Input vs. Output
Fun Facts
100

What enzyme captures carbon dioxide?

RuBisCO

100

What molecule donates electrons during reduction?

NADPH

100

How many G3P are needed to regenerate RuBP?

Five

100

How many CO₂ are needed for one G3P?

Three

100

What would happen if RuBisCO stopped working?

Carbon could not be fixed; the cycle would stop

200

What is the first stable product of the cycle?

3-PGA

200

What is 3-PGA turned into?

G3P

200

True or False: All G3P produced go on to make sugar.

False

200

How many turns of the cycle make one glucose?

6

200

Why is it also called the “dark reactions”?

Because it does not require light directly

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