1. What is the main purpose of DNA replication?, A. To produce energy, B. To make a copy of DNA, C. To create proteins, D. To destroy damaged cells, 2. Which enzyme is responsible for unzipping the DNA double helix?, A. DNA polymerase, B. Helicase, C. Ligase, D. RNA polymerase, 3. Which of the following can cause mutations?, A. Radiation, B. Chemicals, C. Errors during replication, D. All of the above, 4. In DNA, which nitrogenous base pairs correctly with Adenine (A)?, A. Cytosine, B. Guanine, C. Thymine, D. Uracil, 5. What is a mutation?, A. A normal cell process, B. A change in DNA sequence, C. A type of protein, D. A cell organelle.

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