Under oxygenic condition, 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 under oxygenic conditions, we can follow these steps:

### Step 1: Understand the Concept of Respiratory Quotient (RQ)
The respiratory quotient (RQ) is defined as the ratio of the volume of carbon dioxide (CO2) produced to the volume of oxygen (O2) consumed during respiration. It is calculated using the formula:
\[ RQ = \frac{CO2 \, \text{produced}}{O2 \, \text{consumed}} \]

### Step 2: Write the Chemical Equation for Glucose Respiration
The respiration of glucose can be represented by the following balanced chemical equation:
\[ C_6H_{12}O_6 + 6O_2 \rightarrow 6CO_2 + 6H_2O \]
This equation shows that one molecule of glucose (C6H12O6) reacts with six molecules of oxygen (O2) to produce six molecules of carbon dioxide (CO2) and six molecules of water (H2O).

### Step 3: Identify the Amount of CO2 Produced and O2 Consumed
From the balanced equation, we can see:
- **CO2 produced**: 6 molecules
- **O2 consumed**: 6 molecules

### Step 4: Calculate the Respiratory Quotient (RQ)
Using the values obtained from the balanced equation, we can substitute them into the RQ formula:
\[ RQ = \frac{6 \, CO2}{6 \, O2} = 1 \]

### Step 5: Conclusion
The respiratory quotient of glucose under oxygenic conditions is 1.

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

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