Question

respiration: fermentation - ethanol

1. what are the two products of this type of fermentation?
2. what is the electron acceptor molecule here?
3. which types of organisms can use this type of fermentation?
4. describe two industrial uses of this type of fermentation.

Explanation:

1. In ethanol - fermentation, glucose is broken down. The two products are ethanol and carbon - dioxide. This is a result of the metabolic pathway to generate energy in the absence of oxygen.
2. The electron - acceptor molecule in ethanol fermentation is NAD⁺. It gets reduced to NADH during glycolysis and then NADH donates electrons to regenerate NAD⁺.
3. Yeasts are the most well - known organisms that use ethanol fermentation. Some bacteria can also perform this type of fermentation under anaerobic conditions.
4. Ethanol fermentation is used in the production of alcoholic beverages such as beer and wine. It is also used in biofuel production to make ethanol as a renewable energy source.

Answer:

1. Ethanol and carbon - dioxide
2. NAD⁺
3. Yeasts and some bacteria
4. Production of alcoholic beverages; Biofuel production