Answer the questions below to test your GCSE knowledge of DNA structure, nucleotides and base pairing. Click the Check Answers button when you're done to see your score.
1. What is the monomer unit from which DNA is built?
2. Which components make up a DNA nucleotide?
3. Which list shows the four bases found in DNA?
4. The two strands of DNA are held together by weak bonds between complementary on different DNA strands
5. Which base pairs with adenine (A) in DNA?
6. Which sugar molecule is found in DNA?
7. What forms the ‘backbone’ of a DNA strand?
8. What is the correct description of DNA’s overall structure?
9. A nucleoside differs from a nucleotide because it lacks which part?
10. Which pair of scientists proposed the double helix model in 1953?
