Diagram Quiz on DNA Structure

This quiz is designed to assess your  understanding about the "DNA structure"Choose the best answer from the four options given. When you've finished answering as many of the questions as you can, scroll down to the bottom of the page and check your answers by clicking 'Score'. Percentage score will be displayed along with right answers.
DNA structure worksheet
1. Identify the termini labelled 1, 2 and 3 of the DNA strand, remember DNA strands are anti-parallel
3', 5', 3'
5'P, 3'OH, 5'P
5'P, 3'P, 5'OH
3'OH, 5'P, 3'OH
2. The building blocks of DNA which comprises of Sugar+ Nitrogenous base + Phosphate group, labelled 4 is
3. Write the correct bases labelled 5, 6 and 7, remember Chargaff's rule
guanine, cytosine and thymine
guanine, cytosine and uracil
Thymine, cytosine and uracil
Thymine, guanine and uracil
4. The bond that connects adjacent nucleotide labelled 8 is
peptide bond
phosphodiester bond
hydrogen bond
glycosidic bond
5. The nitrogenous bases on the two strands of DNA are joined by (labelled 9)
hydrogen bond
phosphodiester bond
covalent bond
glycosidic bond
6. Sugar+ Nitrogenous bases together without phosphate labelled 10 is called
nucleic acid
7. The negative charge of DNA is due to the residue labelled 11, which is the
Sugar residue
Adenine base
thymine base
phosphate group
Score =
Correct answers:
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