The isotope of carbon used extensively for studies in photosynthesis is

Options

A. `C^(13)`
B. `C^(14)`
C. `C^(15)`
D. `C^(16)`

Answer

To answer the question regarding the isotope of carbon used extensively for studies in photosynthesis, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Isotopes**:
- Isotopes are atoms of the same element that have the same number of protons (atomic number) but different numbers of neutrons, leading to different mass numbers.

2. **Identify the Isotopes of Carbon**:
- Carbon has several isotopes, with the most common ones being Carbon-12 (C-12), Carbon-13 (C-13), and Carbon-14 (C-14).

3. **Determine the Stability of Carbon Isotopes**:
- Among these isotopes, C-12 and C-13 are stable isotopes, while C-14 is a radioactive isotope.

4. **Recognize the Use of Carbon Isotopes in Photosynthesis Studies**:
- Carbon-14 is notably used in scientific studies, including those related to photosynthesis, due to its radioactive properties, which allow for tracing and studying the pathways of carbon in biological processes.

5. **Conclude the Answer**:
- Based on the information gathered, the isotope of carbon that is extensively used for studies in photosynthesis is Carbon-14 (C-14).

### Final Answer:
The isotope of carbon used extensively for studies in photosynthesis is **Carbon-14 (C-14)**.

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