Mature mammalian RBC does not contain `:-`

Options

A. Membrane bounded cell organelles
B. Carbonic anhydrase
C. Haemoglobin
D. Enzyme of glycolyte pathway

Answer

**Step-by-Step Solution:**

1. **Understanding the Structure of Mature Mammalian RBCs**:
- Mature mammalian red blood cells (RBCs) are unique because they lack certain cellular components that are typically found in other cells. This includes the absence of a nucleus and various organelles.

2. **Identifying the Options**:
- The question provides four options:
a) Membrane-bonded cell organelles
b) Carbonic anhydrase
c) Hemoglobin
d) Enzymes of glycolytic pathway

3. **Analyzing Each Option**:
- **Option a: Membrane-bonded cell organelles**:
- Mature RBCs do not contain membrane-bound organelles such as mitochondria or the nucleus. This option is correct.
- **Option b: Carbonic anhydrase**:
- This enzyme is present in RBCs and plays a crucial role in converting carbon dioxide into carbonic acid. Thus, this option is incorrect.
- **Option c: Hemoglobin**:
- Hemoglobin is the primary component of RBCs responsible for oxygen transport. Therefore, this option is also incorrect.
- **Option d: Enzymes of glycolytic pathway**:
- Although RBCs lack mitochondria, they still possess enzymes necessary for glycolysis, which allows them to produce energy. Hence, this option is incorrect.

4. **Conclusion**:
- The only correct answer is **membrane-bonded cell organelles**, which are not present in mature mammalian RBCs.

**Final Answer**: Mature mammalian RBC does not contain **membrane-bonded cell organelles**.

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