There аre bоth similаrities аnd differences in cellular respiratiоn and phоtosynthesis. Summarize some of them by choosing the correct answers from the drop-down boxes. The initial energy input that starts glycolysis and is used to drive cellular respiration is [a]. The initial energy input used to drive photosynthesis is [b]. Both cellular respiration and photosynthesis involve electron transport chains (e.t.c.) in a membrane. The e.t.c. involved in cellular respiration is found in the [c]; the e.t.c involved in photosynthesis is found in the [d]. The immediate source of energy for the e.t.c. in cellular respiration is [e]; in photosynthesis, it is [f]. In cellular respiration, the e.t.c. is used to directly generate [g]; in photosynthesis, the e.t.c from PS II is used to directly generate [h], and the e.t.c from PS I is used to directly generate [i].