Match the columns nad choose the correct option
`{:("Column I", "Column II"),(A."Magnesium",i."Alcohol dehydrogenase"),(B."Molybdenum",ii."phosphoenol pyruvate"),(C."Zinc",iii."Nitrogenase"):}`

Options

A. a-ii,b-iii,c-i
B. a-I,b-ii,c-iii
C. a-iii,b-I,c-ii,
D. a-iii,b-ii,c-i

Answer

To solve the question, we need to match the elements from Column I with their respective functions or associations in Column II. Let's go through each element step by step:

### Step 1: Identify the function of Magnesium
- **Magnesium (A)** is known to be a crucial element in various biochemical processes. One of its significant roles is as a cofactor for the enzyme phosphoenolpyruvate carboxylase, which is involved in the process of photosynthesis.
- **Match:** A → ii (phosphoenol pyruvate)

### Step 2: Identify the function of Molybdenum
- **Molybdenum (B)** is an essential trace element that plays a critical role in nitrogen fixation. It is a key component of the enzyme nitrogenase, which is responsible for converting atmospheric nitrogen into a form that plants can use.
- **Match:** B → iii (Nitrogenase)

### Step 3: Identify the function of Zinc
- **Zinc (C)** is an important trace element that serves as a cofactor for various enzymes. Specifically, it acts as an activator for the enzyme alcohol dehydrogenase, which is involved in the metabolism of alcohol.
- **Match:** C → i (Alcohol dehydrogenase)

### Final Matching
Now we can summarize the matches:
- A (Magnesium) → ii (phosphoenol pyruvate)
- B (Molybdenum) → iii (Nitrogenase)
- C (Zinc) → i (Alcohol dehydrogenase)

### Conclusion
The correct option for the matching is:
- A (Magnesium) → ii (phosphoenol pyruvate)
- B (Molybdenum) → iii (Nitrogenase)
- C (Zinc) → i (Alcohol dehydrogenase)

Thus, the correct option is:
- **A second, B third, C first.**

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