EMP can produce a total of how many ATP under aerobic condition.

Options

A. 6
B. 8
C. 24
D. 38 ATP

Answer

To determine how many ATP molecules can be produced from the Embden-Meyerhof-Parnas (EMP) pathway, also known as glycolysis, under aerobic conditions, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Glycolysis**:
- Glycolysis is the first step in cellular respiration where glucose is partially oxidized to produce pyruvate. This process occurs in the cytoplasm and does not require oxygen, which means it can occur under both aerobic and anaerobic conditions.

**Hint**: Remember that glycolysis is the initial step of respiration and does not depend on the presence of oxygen.

2. **ATP Production in Glycolysis**:
- During glycolysis, a net gain of 2 ATP molecules is produced per glucose molecule. This is due to the investment of 2 ATP in the initial steps of the pathway, followed by the production of 4 ATP in later steps.

**Hint**: Focus on the net gain of ATP, which is calculated by subtracting the ATP used from the ATP produced.

3. **Fate of Pyruvate**:
- After glycolysis, the pyruvate produced can enter the Krebs cycle (also known as the citric acid cycle) when oxygen is present. This is where further oxidation occurs, leading to the production of additional ATP.

**Hint**: Consider what happens to pyruvate in aerobic conditions and how it contributes to ATP production.

4. **Total ATP from Aerobic Respiration**:
- In aerobic respiration, the complete oxidation of one molecule of glucose can yield approximately 36 ATP molecules when considering all stages (glycolysis, Krebs cycle, and oxidative phosphorylation). However, from the EMP pathway alone, we only focus on the ATP generated during glycolysis.

**Hint**: Differentiate between the total ATP yield from glycolysis and the total yield from complete aerobic respiration.

5. **Conclusion**:
- Therefore, while glycolysis itself produces a net gain of 2 ATP, the total ATP yield from glucose oxidation in aerobic conditions (including glycolysis, Krebs cycle, and oxidative phosphorylation) is about 36 ATP. However, the EMP pathway alone contributes 8 ATP when considering the entire process of glycolysis and subsequent reactions.

**Final Answer**: The EMP pathway can produce a total of **8 ATP** under aerobic conditions when considering the complete process.