4 Written questions
3 Multiple choice questions
- The structure of DNA, in which two long strands of covalently bonded nucleotidesare held together by hydrogen bonds and
twisted into a spiral coil.
- The sequence, or order, in which the nitrogenous bases adenine (A), cytosine (C), guanine (G), and thymine (T) are arranged in a gene or a DNA fragment, or in an organism's genome.
- A three-step process in which damage to DNA is repaired. Damaged DNA is first recognizedthen removed, and then replaced with newly synthesized DNA.
3 True/False questions
DNA replication → The duplication, or copying, of a DNA molecule. DNA replication begins when the hydrogen bonds connecting the two strands of DNA are broken, causing the strands to unwind and separate. Each strand is then used as a template for the construction of a new strand of DNA.
complementary strand → The insertion of an incorrect nitrogenous base during DNA replication that is not detected and corrected.
mismatch error → A substance or energy source that alters DNA.