Assertion (A). RQ value for fats is less than one. Reason (R). The amount of `CO_(2)` released is less than `O_(2)` consumed when fats are used in respiration

Options

A. A is true but R is false
B. A is false but R is true
C. Both A and R true and R is correct explanation of A
D. Both A and R are true but R is not the correct explanation of A.

Answer

To solve the assertion and reason question, we will analyze both the assertion (A) and the reason (R) provided in the question step by step.

### Step 1: Understand the Assertion (A)
The assertion states that "RQ value for fats is less than one."

**Explanation**:
- RQ (Respiratory Quotient) is defined as the ratio of the volume of carbon dioxide (CO₂) produced to the volume of oxygen (O₂) consumed during respiration.
- For carbohydrates, the RQ is typically 1, meaning the amount of CO₂ produced equals the amount of O₂ consumed.
- For fats, the RQ is less than 1, typically around 0.7, indicating that less CO₂ is produced compared to the amount of O₂ consumed.

### Step 2: Understand the Reason (R)
The reason states that "The amount of CO₂ released is less than O₂ consumed when fats are used in respiration."

**Explanation**:
- This statement is true because fats have a higher carbon-to-oxygen ratio compared to carbohydrates. Therefore, during the breakdown of fats, more oxygen is required to oxidize the fat molecules, resulting in less CO₂ being produced.
- For example, in the case of a triglyceride like tripalmitin, the breakdown requires more O₂ than the amount of CO₂ produced, leading to an RQ of approximately 0.7.

### Step 3: Conclusion
Both the assertion (A) and the reason (R) are true. Additionally, the reason (R) correctly explains the assertion (A) because the lower RQ value for fats is indeed due to the fact that the amount of CO₂ released is less than the amount of O₂ consumed.

### Final Answer
Both A and R are true, and R is the correct explanation of A.

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