Question

Why is life a a series of interrelated chemical reactions - - controlled by enzymes and powered by ATP?

Answer 1

All life requires energy in the form of ATP (adenosine triphosphate). An organism needs proteins in order to function, this is where the enzymes come in. We need to break down protein when consumed, and enzyme help in this process. For example, to break down lactose, you need the enzyme lactase. Once you are able to break down lactose into glucose and galactose- you are then able to use this as energy