Final answer:
Fermentation allows glycolysis to continue by providing NAD+, with an organic molecule acting as the final electron acceptor. It does not produce additional ATP beyond glycolysis. An example is alcoholic fermentation used in making bread, wine, and biofuels.
Step-by-step explanation:
Fermentation allows glycolysis to continue by providing the NAD+ needed to accept high-energy electrons. In fermentation, an organic molecule (commonly pyruvic acid) acts as the final electron acceptor, which converts NADH back into NAD+, allowing glycolysis to continue. This process does not involve an electron transport system and does not directly produce any additional ATP beyond that produced during glycolysis.
An example of fermentation is alcoholic fermentation, where pyruvate is converted into alcohol and carbon dioxide by yeasts and some bacteria. This type of fermentation is used to make bread, wine, and biofuels.