Answer:
Because this offers a control for your experiment.
Explanation:
If you are testing the effects of an enzyme, you need to have a control to compare your results with to see if the enzyme is truly what is causing the phenomenon.
A exist naturally because I don't know I figured it out you're welcome
I understand it is DNA Polymerase but I'm not sure at all
Answer:
In the stroma, in addition to CO2, two other chemicals are present to initiate the Calvin cycle: an enzyme abbreviated RuBisCO, and the molecule ribulose bisphosphate (RuBP). RuBP has five atoms of carbon and a phosphate group on each end.
Yep im very sure its b, hope its right! c: