Answer:
They slowly lose energy.
Explanation:
High-energy electrons give the chain either NADH or FADH2 to complete it.
Low-energy electrons form water by decreasing the oxygen molecules.
<span>The element Carbon is the </span>building block for all<span> known living things. That is why, in some science-fiction movies you hear the term, Carbon-based units.</span>
Pepsinogen, an inactive zymogen, is secreted into gastric juice from both mucous cells and chief cells. Once secreted, pepsinogen is activated by stomach acid into the active protease pepsin, which is largely responsible for the stomach's ability to initiate digestion of proteins.
