The process in this simulation showed an energy transformation that occured as is absorbed and molecules are broken apart and then rearranged to form new molecules during the chemical reaction in the plant cell.

This refers to photosynthesis.This is because Photons of energy are absorbed by the chlorophyll for splitting water molecules to electrons and H+.The sunlight energy is also  used to generate energy as ATPs, during chemiosmosis.This occurs at light dependent stage.

The H+ is later used to reduce CO2, in presence of ATPs to form a new compound as CHO, fatty acids and proteins back.This takes place in Calvin cycle, at Light independent stage.

Explanation:

it has one origin of replication, but it proceeds in two directions - d)

when it is at an intermediate population density