Number of thylakoids membrane involved in ATP synthesis are called

Options

A. 10-100
B. `5-10`
C. 100-200
D. 200-500

Answer

To solve the question regarding the number of thylakoid membranes involved in ATP synthesis, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Chloroplast Structure**:
- Chloroplasts are membrane-bound organelles found in plants and cyanobacteria that play a crucial role in photosynthesis. They contain thylakoids, which are internal membrane-bound structures.

**Hint**: Remember that chloroplasts are essential for photosynthesis and contain thylakoids.

2. **Identifying Thylakoids**:
- Thylakoids are arranged in stacks known as grana (singular: granum). Each granum consists of multiple thylakoid discs.

**Hint**: Think of thylakoids as discs that stack to form a structure called granum.

3. **Counting Thylakoids in a Granum**:
- Each granum typically contains about 10 to 100 thylakoids. This range indicates the number of thylakoid membranes that can participate in ATP synthesis.

**Hint**: Focus on the range of thylakoids per granum, which is key to answering the question.

4. **Understanding ATP Synthesis**:
- The thylakoid membranes are the sites where the light reactions of photosynthesis occur, leading to the synthesis of ATP and NADPH.

**Hint**: Recall that ATP synthesis occurs in the thylakoid membranes during the light reactions of photosynthesis.

5. **Conclusion**:
- Based on the information, the number of thylakoid membranes involved in ATP synthesis is approximately 10 to 100 per granum.

**Final Answer**: Therefore, the correct answer to the question is **10 to 100** (Option 1).