Select the correct combination of the respiratory substrates and their respective RQs.

Options

A. `{:("Organic acid","Fats","Succulents"),(1.3,0.7,Zero):}`
B. `{:("Organic acid","Fats","Succulents"),("Infinity",0.7,Zero):}`
C. `{:("Organic acid","Fats","Succulents"),(Zero,1.3,0.7):}`
D. `{:("Organic acid","Fats","Succulents"),(zero,0.7,1.3):}`

Answer

To solve the question regarding the correct combination of respiratory substrates and their respective respiratory quotients (RQs), we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of RQ**:
- The respiratory quotient (RQ) is defined as the ratio of carbon dioxide (CO2) produced to oxygen (O2) consumed during respiration.
- RQ values vary for different substrates: carbohydrates, fats, proteins, organic acids, and succulents.

2. **Identify RQ Values for Different Substrates**:
- **Carbohydrates**: RQ = 1.0
- **Fats (Lipids)**: RQ = 0.7
- **Proteins**: RQ = 0.8
- **Organic Acids**: RQ = 1.3
- **Succulents**: RQ = 0

3. **Match the Substrates with Their RQ Values**:
- Organic Acids: RQ = 1.3
- Fats: RQ = 0.7
- Succulents: RQ = 0

4. **Select the Correct Combination**:
- Based on the values identified, the correct combination of respiratory substrates and their respective RQs is:
- Organic Acids: 1.3
- Fats: 0.7
- Succulents: 0

5. **Conclusion**:
- The correct option that includes these values is option 1.