Which of these has R.Q. value more than one ?

Options

A. Fat
B. Protein
C. Carbohydrate
D. Organic acid

Answer

To determine which of the given options has a respiratory quotient (R.Q.) value greater than one, we can follow these steps:

### Step-by-Step Solution:

1. **Understand R.Q. Definition**:
- The respiratory quotient (R.Q.) is defined as the ratio of the volume of carbon dioxide (CO2) produced to the volume of oxygen (O2) consumed during respiration for a particular substrate.

2. **Identify R.Q. Values for Each Substrate**:
- **Carbohydrates**: The R.Q. value for carbohydrates (like glucose) is always 1.
- **Fats**: The R.Q. value for fats is approximately 0.7.
- **Proteins**: The R.Q. value for proteins is around 0.9.
- **Organic Acids**: The R.Q. value for organic acids is greater than 1.

3. **Analyze the Options**:
- **Fat**: R.Q. < 1 (specifically around 0.7)
- **Protein**: R.Q. < 1 (around 0.9)
- **Carbohydrate**: R.Q. = 1
- **Organic Acid**: R.Q. > 1

4. **Conclusion**:
- Among the given options, the only substrate with an R.Q. value greater than 1 is **Organic Acid**.

### Final Answer:
The correct answer is **Organic Acid**.

---