Mitochondria's diameter is (a)____ and length is (b)____

Answer

To answer the question regarding the dimensions of mitochondria, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understanding Mitochondria**: Mitochondria are known as the "powerhouse of the cell" because they generate energy in the form of ATP through cellular respiration.

2. **Structure of Mitochondria**: Mitochondria have a double membrane structure, consisting of an outer membrane and an inner membrane. Inside, they contain a matrix where important processes occur.

3. **Dimensions of Mitochondria**:
- **Diameter**: The average diameter of mitochondria is approximately **0.221 micrometers**.
- **Length**: The length of mitochondria typically ranges from **1 to 4 micrometers**.

4. **Final Answer**:
- (a) Diameter = **0.221 micrometers**
- (b) Length = **1 to 4 micrometers**