Activator of Rubisco, catalase, alcohol dehydrogenase and PEP case are respectively.

Options

A. Mg,Zn,Zn,Mg
B. Mg,Fe,Fe,Mg
C. Mg,Fe,Zn,Mg
D. Mg,Zn,Fe,Mg

Answer

To solve the question regarding the activators of Rubisco, catalase, alcohol dehydrogenase, and PEP carboxylase, we will identify each enzyme's activator step by step.

### Step-by-Step Solution:

1. **Activator of Rubisco**:
- Rubisco (Ribulose-1,5-bisphosphate carboxylase/oxygenase) is an important enzyme in the process of photosynthesis.
- The activator of Rubisco is **Magnesium (Mg)**. Magnesium ions are essential for the proper functioning of Rubisco, as they help in the enzyme's activation.

2. **Activator of Catalase**:
- Catalase is an enzyme that catalyzes the decomposition of hydrogen peroxide to water and oxygen.
- The activator of catalase is **Iron (Fe)**. Iron is a crucial component of the catalase enzyme, and its presence is necessary for the enzyme's activity.

3. **Activator of Alcohol Dehydrogenase**:
- Alcohol dehydrogenase is an enzyme involved in the metabolism of alcohols.
- The activator of alcohol dehydrogenase is **Zinc (Zn)**. Zinc ions play a significant role in the catalytic activity of this enzyme.

4. **Activator of PEP Carboxylase**:
- PEP carboxylase (Phosphoenolpyruvate carboxylase) is involved in the process of carbon fixation in plants.
- The activator of PEP carboxylase is also **Magnesium (Mg)**. Similar to Rubisco, magnesium is essential for the activation of this enzyme.

### Summary of Activators:
- **Rubisco**: Magnesium (Mg)
- **Catalase**: Iron (Fe)
- **Alcohol Dehydrogenase**: Zinc (Zn)
- **PEP Carboxylase**: Magnesium (Mg)

### Final Answer:
The activators of Rubisco, catalase, alcohol dehydrogenase, and PEP carboxylase are respectively:
- **Magnesium (Mg), Iron (Fe), Zinc (Zn), Magnesium (Mg)**.

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