This requires energy. These molecules can be recycled so that a constant stream of energy rich ATP is available for all metabolic pathways in the cell. Almost all cellular processes need ATP to ...

All cells produce substances that are essential for them to function properly. For example, in plants, specific metabolic pathways can produce glucose and chlorophyll. Metabolic pathways can be ...

They reasoned that forgotten chemistry would appear as discontinuities ... These processes represent the earliest metabolic pathways. In order to model the history of biochemistry, ELSI ...