<span>Their electrons are far away from the nuclei of the atoms. Transfer high-energy electrons from NADH and FADH2 to protein complexes of the electron transport chain. </span>
Answer:
cytoskeleton is a structure that helps cells maintain their shape and internal organization, and it also provides mechanical support that enables cells to carry out essential functions like division and movement
All ecosystems contain biotic and abiotic parts, so answer d.