Restriction enzymes are also called

Options

A. Molecular markers
B. Vectors
C. Carriers
D. Molecular scissors

Answer

**Step-by-Step Solution:**

1. **Understanding Restriction Enzymes:**
- Restriction enzymes are proteins that can cut DNA at specific sequences. They are crucial tools in molecular biology for manipulating DNA.

2. **Identifying the Function of Restriction Enzymes:**
- These enzymes recognize specific sequences in the DNA, known as restriction sites, and cleave the DNA at these sites. This action is akin to how scissors cut paper.

3. **Analyzing the Options:**
- The options provided are:
- Molecular markers
- Vectors
- Carriers
- Molecular scissors

4. **Evaluating Each Option:**
- **Molecular markers:** These are used in genetics to identify specific sequences in DNA but do not refer to restriction enzymes.
- **Vectors:** Vectors are vehicles used to transfer genetic material into a host cell, not the enzymes that cut DNA.
- **Carriers:** This term generally refers to molecules that transport substances, not specifically related to DNA cutting.
- **Molecular scissors:** This term aptly describes the function of restriction enzymes as they cut DNA.

5. **Selecting the Correct Answer:**
- Based on the analysis, the correct answer is "molecular scissors" because it reflects the cutting action of restriction enzymes on DNA.

**Final Answer:**
Restriction enzymes are also called molecular scissors.

---