Cell organelle covered by a single unit membrane is

Options

A. Glyoxysome
B. Lysosome
C. Peroxisome
D. All the above

Answer

To answer the question "Cell organelle covered by a single unit membrane is:", we will analyze the options provided and identify which organelles are covered by a single membrane.

### Step-by-Step Solution:

1. **Identify the Options**: The question typically provides multiple options. In this case, we will consider the following options:
- Glyoxysome
- Lysosome
- Peroxisome
- All of the above

2. **Examine Glyoxysome**:
- Glyoxysomes are specialized peroxisomes found in plant cells and filamentous fungi.
- They are covered by a single unit membrane.
- **Function**: They contain enzymes that initiate the breakdown of fatty acids and assist in gluconeogenesis (the synthesis of sugar from non-carbohydrate sources).

3. **Examine Lysosome**:
- Lysosomes are membrane-bound organelles that contain hydrolytic enzymes.
- They are also covered by a single unit membrane.
- **Function**: They are involved in the digestion of macromolecules, recycling of cellular components, and can be referred to as the "suicidal bag" of the cell due to their role in autophagy.

4. **Examine Peroxisome**:
- Peroxisomes are another type of organelle that is surrounded by a single unit membrane.
- **Function**: They are involved in the breakdown of fatty acids and the detoxification of hydrogen peroxide.

5. **Conclusion**:
- All three organelles (Glyoxysome, Lysosome, and Peroxisome) are covered by a single unit membrane.
- Therefore, the correct answer to the question is "All of the above".

### Final Answer:
The cell organelle covered by a single unit membrane is **All of the above** (Glyoxysome, Lysosome, and Peroxisome).

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