Photo Syns. Calvin Cycle

Question 1

Carbon Fixation

Answer 1

Incorporation of CO2 in an organic compound. This method is common in C3 plants.

Question 2

Step one of Calvin Cycle

Answer 2

CO2 diffuses into stroma from cytosol. Enzyme attaches CO2 to 5 carbon RuBP. 6 carbon molecule unstable and split into 2, 3 carbon molecule; 3-PGA.

Question 3

Step 2 of Calvin Cycle

Answer 3

Each 3-PGA converted into another 3 carbon molecule, G3P in two steps. First 3-PGA receives a phosphate from ATP and then it receives H+ from NADPH.

Question 4

Step 3 of Calvin Cycle

Answer 4

One G3P leaves and is later used to make carbs.

Question 5

Step 4 of Calvin Cycle

Answer 5

Remaing G3P is converted into RuBP by adding a phosphate from ATP.

Question 6

What is Calvin Cycle

Answer 6

Series of enzyme-assisted chemical reactions that produces a three carbon sugar.