What letter can goin front or end of zein

About the size of pickup trucks from where you're floating, the organelles called mitochondria convert energy from your food into adenosine triphosphate, or atp, to power biochemical reactions. a typical cell burns through 1 billion molecules of atp every 1 to 2 minutes." summarize this pleas and aspa i will give brainless

Rewrite the passage to improve expression.

What do the stage directions tell the reader about steve’s and charlie’s point of view?