The final `e^(-)` acceptors of alcoholic fermentation and aerobic respiration respectively are

Options

A. Pyruvate and Oxygen
B. Acetyle Co. A and Oxygen
C. Acetaldehyde and Cyt-`a_(3)`
D. Acetaldehyde and Oxygen

Answer

To answer the question about the final electron acceptors of alcoholic fermentation and aerobic respiration, we can break down the solution into the following steps:

### Step-by-Step Solution:

1. **Understand the Types of Respiration**:
- There are two main types of respiration: aerobic respiration and anaerobic respiration (fermentation).
- Aerobic respiration occurs in the presence of oxygen, while anaerobic respiration occurs in the absence of oxygen.

2. **Identify Alcoholic Fermentation**:
- Alcoholic fermentation is a type of anaerobic respiration that occurs in yeast and some bacteria.
- In this process, glucose is converted into ethanol and carbon dioxide.

3. **Determine the Final Electron Acceptor in Alcoholic Fermentation**:
- In alcoholic fermentation, the final electron acceptor is acetaldehyde (derived from pyruvate).
- Acetaldehyde is then reduced to ethanol during the fermentation process.

4. **Identify Aerobic Respiration**:
- Aerobic respiration involves the complete oxidation of glucose in the presence of oxygen.
- This process occurs in the mitochondria of cells and produces a significant amount of ATP.

5. **Determine the Final Electron Acceptor in Aerobic Respiration**:
- In aerobic respiration, the final electron acceptor is oxygen.
- Oxygen accepts electrons at the end of the electron transport chain, allowing for the production of water.

6. **Summarize the Findings**:
- The final electron acceptor for alcoholic fermentation is acetaldehyde, while for aerobic respiration, it is oxygen.

### Final Answer:
- The final electron acceptors of alcoholic fermentation and aerobic respiration respectively are **acetaldehyde and oxygen**.