Glycolysis starts with one molecule of glucose<span> and ends with two </span>pyruvate<span> (pyruvic acid) molecules, a total of four </span>ATP<span> molecules, and two molecules of </span>NADH<span> .
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The electrons passing through the electron transport chain gradually lose energy, High-energy electrons donated to the chain by either NADH or FADH2 complete the chain, as low-energy electrons reduce oxygen molecules and form water.!!!! Hope this helps
Answer:
The difference between internal and external fertilization is that internal fertilization occurs inside the body, whereas external fertilization happens outside the body. Fertilization is the process by which a sperm cell and an egg cell unite to form a completely new individual.
Explanation:
