Porphyrin ring of the chlorophyll mol ecule has following number of pyrrole rings

Options

A. one
B. two
C. three
D. four

Answer

To determine the number of pyrrole rings in the porphyrin ring of the chlorophyll molecule, follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of Chlorophyll**:
- Chlorophyll is a pigment crucial for photosynthesis, primarily found in the chloroplasts of plants.
- It consists of a porphyrin head and a long hydrocarbon tail.

2. **Identify the Porphyrin Head**:
- The porphyrin head is the part of the chlorophyll molecule that contains the central metal ion (magnesium) and is responsible for absorbing light.

3. **Examine the Composition of the Porphyrin Ring**:
- The porphyrin ring is made up of a series of interconnected nitrogen-containing rings.
- Specifically, the porphyrin structure includes pyrrole rings.

4. **Count the Pyrrole Rings**:
- In the porphyrin head of chlorophyll, there are four nitrogen atoms arranged in a cyclic structure.
- Each of these nitrogen atoms is part of a pyrrole ring.

5. **Conclusion**:
- Therefore, the porphyrin ring of the chlorophyll molecule contains **four pyrrole rings**.

### Final Answer:
The porphyrin ring of the chlorophyll molecule has **4 pyrrole rings**.

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