The Calvin Cycle

Question 1

A plant uses the Calvin Cycle to make:

Answer 1

starch, cellulose, molecules for protein synthesis

Question 2

What does the Calvin Cycle primarily need?

Answer 2

CO2

Question 3

What is the goal of the Calvin Cycle?

Answer 3

to use the ATP and NADPH to make something useful for the plant (sugar)

Question 4

Carbon Fixation:

Answer 4

• CO2 is fixed to RuBP by the Ribisco enzyme and this makes it rlly unstable and it breaks into two 3-Phosphogylcerates
• this happens to 3 molecules of RuBP

Question 5

Reduction:

Answer 5

ATP slans a phosphate group onto the 3-phosphoglycerwate and then NADPH gives it some elctrons => end up with two molecules of G3P a simple sugar

Question 6

Regeneration:

Answer 6

each G3P has 3 carbons and there’s 2 of themand you need 6 carbons for glucose but you also need 5 carbons to make RuBP
luckily this process happens 6 times so you end up with 36 carbons in the form of G3P, and 1 G3P is used to make glucose (but it can’t yet until another joins it next cycle), and the remaining 30 carbons go back into making 6 new RuBP so the process sustains