The image is an infographic divided into four sections, each containing a different question and answer related to PCR (Polymerase Chain Reaction) technology. Here is a summary of the questions and answers:

1. **Question**: What is the purpose of PCR?
   - **Answer**: PCR is used for amplifying DNA fragments from a single sample.

2. **Question**: How does PCR work?
   - **Answer**: PCR involves the following steps: denaturation, annealing, and extension.

3. **Question**: What is the role of the enzyme Taq polymerase in PCR?
   - **Answer**: Taq polymerase catalyzes the synthesis of DNA strands by forming a primer-template complex.

4. **Question**: What is the significance of the primer in PCR?
   - **Answer**: The primer is a short DNA sequence that binds to the template DNA strand during the initial stages of PCR.

The infographic provides a concise overview of the fundamental principles of PCR, emphasizing its importance