An example of a cell devoid of nuclear membrane and mitochondria is:

Options

A. bacterial cell
B. sperm
C. protist
D. sponge cell

Explanation

To solve the question "An example of a cell devoid of nuclear membrane and mitochondria is:", we will follow these steps:

### Step 1: Understand the Characteristics of Cells
- Cells can be broadly classified into two categories: prokaryotic and eukaryotic cells.
- Prokaryotic cells do not have a true nucleus (nuclear membrane) and do not have membrane-bound organelles like mitochondria.

### Step 2: Analyze the Options Given
- The options provided are:
1. Bacterial cell
2. Sperm
3. Protist
4. Sponge cell

### Step 3: Evaluate Each Option
- **Bacterial Cell**: This is a prokaryotic cell, which means it lacks a nuclear membrane and mitochondria. Therefore, this option is a strong candidate.
- **Sperm**: This is a eukaryotic cell, which has a nuclear membrane and may contain mitochondria. Hence, this option is incorrect.
- **Protist**: Protists are also eukaryotic cells, which means they have a nuclear membrane and mitochondria. This option is incorrect.
- **Sponge Cell**: Sponge cells are eukaryotic as well, possessing a nuclear membrane and mitochondria. This option is also incorrect.

### Step 4: Conclusion
- After evaluating all the options, the only cell type that is devoid of both a nuclear membrane and mitochondria is the bacterial cell.

### Final Answer
The correct answer is **A) Bacterial cell**.

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