What are the enzymes that drive the Calvin cycle are dissolved in the cholorplast

RuBisCO, FBPase, SBPase, and PRK.

Explanation:

Calvin cycle is operated by 11 different enzymes that catalyze 13 reactions. The “key” regulatory enzymes are RuBisCO, FBPase, SBPase, and PRK. These enzymes play a major role as they control the rate of CO2 fixation.

Hope it helps

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.