The rate of respiration depends upon the

Options

A. quantity of protoplasm in cell
B. quanlity of protoplasm in cell
C. both (a) and (b)
D. None of these

Answer

To solve the question regarding what the rate of respiration depends upon, we can break down the reasoning into clear steps:

### Step-by-Step Solution:

1. **Understanding Respiration**: Respiration is a biochemical process that occurs in cells, where glucose is broken down to release energy. The rate of respiration can vary based on several factors.

2. **Identifying Factors**: The question provides us with two specific factors to consider:
- a. Quantity of protoplasm in the cell
- b. Quality of protoplasm in the cell

3. **Analyzing Quantity of Protoplasm**:
- Protoplasm is the living substance within a cell. A higher quantity of protoplasm generally means more cellular machinery (like organelles) is available to carry out respiration. Thus, cells with more protoplasm can potentially have a higher rate of respiration.

4. **Analyzing Quality of Protoplasm**:
- The quality of protoplasm refers to its composition and condition. Healthy, well-functioning protoplasm is essential for efficient respiration. Factors such as water content, nutrient availability, and overall cellular health can influence the quality of protoplasm.

5. **Conclusion**: Both the quantity and quality of protoplasm are crucial for determining the rate of respiration. Therefore, both factors must be considered.

6. **Final Answer**: The correct option is **c. Both a and b**. This means that the rate of respiration depends on both the quantity and quality of protoplasm in the cell.