Haemozoin is a

Options

A. (a) precursor of hemoglobin
B. (b) toxin released from Streptococcus infected cells
C. (c) toxin released from Plasmodium infected cells
D. (d) toxin released from haemophilus infected cells

Answer

**Step-by-Step Solution:**

1. **Understanding Hemozoin**: Hemozoin is a pigment that is produced during malarial infection. It is a heme polymer that forms as a result of the breakdown of red blood cells (RBCs) by the malaria-causing parasite, Plasmodium.

2. **Formation of Hemozoin**: When Plasmodium enters the human body, it initially infects liver cells and then moves on to infect red blood cells. As the parasite ruptures the RBCs, it releases heme, which is then converted into hemozoin.

3. **Role of Hemozoin**: Hemozoin acts as an indicator of malaria infection. Its release is associated with symptoms such as chills and cycles of fever, which are characteristic of malaria.

4. **Evaluating Options**:
- **Option A**: "Hemozoin is a precursor of hemoglobin." - This is incorrect because hemozoin is a product of heme breakdown, not a precursor to hemoglobin.
- **Option B**: "Toxin released from streptococcus infected cells." - This is also incorrect as streptococcus bacteria produce a different toxin called pneumolysin, not hemozoin.
- **Option C**: "Toxin released from plasmodium infected cells." - This is correct because hemozoin is indeed released when Plasmodium infects and ruptures RBCs.
- **Option D**: "Toxin released from haemophilus infected cells." - This is incorrect as well, since haemophilus primarily infects white blood cells and does not produce hemozoin.

5. **Conclusion**: Based on the evaluation of the options, the correct answer is Option C: "Toxin released from plasmodium infected cells."

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