Respiratory quotient of glucose is

Options

A. `0.5`
B. `0.7`
C. `1.0`
D. `1.5`

Answer

To determine the respiratory quotient (RQ) of glucose, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Respiratory Quotient (RQ)**:
- The respiratory quotient is defined as the ratio of the volume of carbon dioxide (CO2) produced to the volume of oxygen (O2) consumed during respiration.

2. **Write the Chemical Equation for Glucose Respiration**:
- The respiration of glucose can be represented by the following equation:
\[ C_6H_{12}O_6 + 6O_2 \rightarrow 6CO_2 + 6H_2O \]
- This equation shows that one molecule of glucose reacts with six molecules of oxygen to produce six molecules of carbon dioxide and six molecules of water.

3. **Identify the Amount of CO2 Produced and O2 Consumed**:
- From the equation, we see that for every 1 molecule of glucose, 6 molecules of CO2 are produced, and 6 molecules of O2 are consumed.

4. **Calculate the Respiratory Quotient (RQ)**:
- Using the definition of RQ:
\[ RQ = \frac{\text{Volume of CO2 produced}}{\text{Volume of O2 consumed}} = \frac{6}{6} = 1 \]

5. **Conclusion**:
- Therefore, the respiratory quotient of glucose is 1.

### Final Answer:
The respiratory quotient of glucose is **1**.

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