The amount of water required to form one molecule of glucose in a photosynthetic reaction is

Options

A. 6 molecules
B. 10 molecules
C. 1 molecules
D. 12 molecules

Answer

To determine the amount of water required to form one molecule of glucose in a photosynthetic reaction, we can follow these steps:

### Step 1: Understand the Photosynthesis Equation
The overall equation for photosynthesis can be represented as:
\[ 6 \, CO_2 + 6 \, H_2O \xrightarrow{light \, energy} C_6H_{12}O_6 + 6 \, O_2 \]
This equation indicates that carbon dioxide (CO2) and water (H2O) are used to produce glucose (C6H12O6) and oxygen (O2) in the presence of light energy.

### Step 2: Identify the Molecules Involved
From the balanced equation, we can see that:
- 6 molecules of carbon dioxide (CO2) are required.
- 6 molecules of water (H2O) are required.
- 1 molecule of glucose (C6H12O6) is produced.

### Step 3: Determine the Water Requirement
From the equation, we see that to produce 1 molecule of glucose, 6 molecules of water are needed.

### Step 4: Conclude the Answer
Thus, the amount of water required to form one molecule of glucose in a photosynthetic reaction is **6 molecules of water (H2O)**.

### Final Answer
**6 molecules of water (H2O)** are required to form one molecule of glucose.

---