It would be A. NADH -- electron carrier
The cell membrane is composed of a phospholipid bilayer. Because it is made of lipids, they are non-polar molecules. That means that other non-polar molecules can easily pass through. In addition to other non-polar molecules, small, uncharged molecules like water, glycerol, ethanol can also pass through without the use of channel or carrier proteins. <span />
Answer:
the answer is body
Explanation:
because physical is something you can touch you cant touch any of the other terms with your fingers except bodys so that's the answer