Similarities
| Photosynthesis
– Electrons are sent to the ETC for the light-dependent reactions using a carrier – Existence of a proton gradient in the thylakoid space that passes through ATP Synthase to make ATP – Similar electron carriers |
Cellular Respiration
– Electrons are sent to the ETC for oxidative phosphorylation using NADH/FADH – Existence of a proton gradient in the intermembrane space that passes through ATP Synthase to make ATP – Involve redox reactions |
Differences
| Photosynthesis
– H+ accumulate in lumen → chemiosmosis moves H+ from lumen to stroma – Terminal electron acceptor is NADP+ – Chloroplast – Anabolic → energy absorbed used to make ATP & NADPH |
Cellular Respiration
– H+ accumulate in lumen → chemiosmosis moves H+ from intermembrane space to matrix – Terminal electron acceptor is oxygen – (mostly) Mitochondria – Catabolic → energy released used to make ATP & power cellular work |