Question

Which enzyme breaks the DNA molecule?

Hint:

Restriction endonucleases are used in genetic engineering, while DNase is a general enzyme that breaks DNA.

Answer 1

Step 1: Enzyme action. The enzymes responsible for breaking or cutting DNA are called **restriction endonucleases**.

Step 2: Mechanism. - Restriction endonucleases recognize specific sequences of DNA and cut at those sites. - Another enzyme, **DNase (deoxyribonuclease)**, can also non-specifically break down DNA into fragments.

Step 3: Correct enzyme. When asked generally, the correct answer is DNase.

Final Answer: \[ \boxed{\text{DNase (Deoxyribonuclease)}} \]