If the Calvin cycle uses three molecules of CO2 to produce 6 molecules of G3P, but only one G3P molecule is?

Question

used to form a carbohydrate molecule, what happens to the other carbons that were taken in?

a any unused CO2 is released into the environment

b the other 5 G3P molecules are used to regenerate more RuBp

c Any unused G3P molecule is converted and stored as starch

d the remaining five G3P molecules are use to reduce CO2

Answer 1

b) the other 5 G3P molecules are used to regenerate more RuBP.