DNA Structure: Matching Questions to Answers

1. What is one of the four nucleotide bases found in DNA?

'Thymine'

2. What is one of the four nucleotide bases found in DNA that pairs with guanine?

'Cytosine'

3. What type of bond connects the sugar-phosphate backbone in a DNA molecule?

'Phosphodiester bond'

4. What type of bond holds the two strands of DNA together?

'Hydrogen bonds'

5. What is the term for the two nitrogenous bases that have a double-ring structure?

'Purines'

6. How are the two strands of DNA oriented in relation to each other?

'Antiparallel'

7. In which direction is DNA synthesized?

'5’ to 3’'

8. What is the component of a nucleotide that connects the sugar to the nitrogenous base?

'Phosphate group'

9. What is a characteristic of a nucleotide sequence that cannot form complementary base pairs?

'Cannot form complimentary base pairs'

10. How are guanine and cytosine bonded together in a DNA molecule?

'Stabilised by three hydrogen bonds'