As an assist to his students back in 1960, microbiologist Donald Nicholson sketched out a big chart of metabolic pathways; he thought it would help them to have it pinned up on a wall for ready ...

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 ...

All metabolic pathways have to be regulated and controlled to stop the build-up of an end product that isn’t needed. The cell can control a metabolic pathway by the presence or absence of a ...