Answer: A commensal relationship occurs when one species benefits from the close, prolonged interaction, while the other neither benefits nor is harmed. Just like when a bird is on a tree, the tree is not being harmed by the bird or it’s branches of the nest.
Trees and birds have a commensalism relationship. The birds benefit from having a place to build their nests, while the trees are unharmed and not impacted by the bird’s presence.
That would be oxidative phosphorylation...this involves the electron transport chain; takes one NADH to make 2.5 ATP, one FADH2 to make 1.5 ATP...overall you make 34 ATP molecules.
