ions can be observed, and t seem quite so unnerving. You can see t a cell is just millions of objects—lysosomes,endosomes, ribosomes, ligands, peroxisomes, proteins of every size and somillions of ots and performing mundane tasks: extracting energy from nutrients,assembling structures, getting rid of e, ruders, sending and receivingmessages, making repairs. typically a cell ain some 20,000 different types of protein,and of t 2,000 types  least 50,000 molecules. “t even if  only t in amounts of moretotal is still a very minimum of 100 million protein molecules in eacaggering figure gives some idea of ty of biocivity hin us.”

    It is all an immensely demanding process. Your  must pump 75 gallons of blood an’s enougo fill four Olympic-sized so keep all ted. (And t’s at rest. Duringexercise te can increase as mucaken up by tocations, and t a typical cell, t a cell does and  requires.

    You may recall from an earlier cer t toc to edas captive bacteria and t tially as lodgers in our cells, preserving tic instructions, dividing to timetable, speaking t  tually all take into your body are delivered, after processing, to toced into a molecule called adenosine tripe, or AtP.

    You may not P, but it is P molecules areessentially little battery packs t move t t of it. At any given moment, a typical cell in your bodyP molecules in it, and in tes every one of taken tP equivalent to about . Feel t’s your AtP at work.

    can only be called great dignity. take doruts and bu