Which of the following performs respiration with the help of plasma membrane ?

Options

A. Bacteria
B. Algae
C. Fungi
D. All the above

Answer

To answer the question "Which of the following performs respiration with the help of plasma membrane?" we will analyze the options provided: bacteria, algae, fungi, or all of the above.

### Step-by-Step Solution:

1. **Understanding the Organisms**:
- We need to understand the basic characteristics of the organisms listed: bacteria, algae, and fungi.
- Bacteria are unicellular and prokaryotic, meaning they lack a defined nucleus and membrane-bound organelles.
- Algae and fungi are generally eukaryotic, meaning they have a defined nucleus and organelles, including mitochondria.

2. **Respiration Mechanism**:
- In eukaryotic cells (like algae and fungi), respiration primarily occurs in mitochondria, which are specialized organelles that facilitate aerobic respiration.
- In contrast, bacteria do not have mitochondria. Instead, they perform respiration directly across their plasma membrane.

3. **Role of Plasma Membrane in Bacteria**:
- The plasma membrane of bacteria contains structures called mesosomes, which are invaginations that increase the surface area.
- These mesosomes contain enzymes that are crucial for the biochemical reactions involved in respiration.

4. **Conclusion**:
- Since bacteria perform respiration using their plasma membrane and do not rely on mitochondria, they are the correct answer to the question.
- Algae and fungi, while they do perform respiration, do so through their mitochondria and not directly via the plasma membrane.

### Final Answer:
The correct option is **bacteria**.

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