GCSE Biology – Structure of DNA

Last updated: 22/06/2020

Learning Objectives

-I can describe the structure of DNA including the nucleotide, sugar and phosphate groups
-I can recall the different bases in DNA and can recall that the bases C and G match up and the bases A and T match up
-I can describe how different sequences of DNA code for amino acids
-I can describe the process of protein synthesis
-I can describe how variations in DNA affect the protein being made

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  1. What structure does DNA have?

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  2. How many strands are there intertwined in DNA?

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  3. What is the DNA polymer made up of?

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  4. What is a nucleotide?

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  5. What does each nucleotide have?

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  6. What else does each nucleotide have?

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  7. How many nucleotides is DNA made from?

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  8. Which chemical is there between sugar molecules in DNA?

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  9. What do strands of DNA consist of?

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  10. Which of these is a DNA base?

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  11. Which of these is a DNA base?

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  12. Which of these is a DNA base?

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  13. Which of these is a DNA base?

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  14. What base is C always linked to on the opposite strand?

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  15. What base is G always linked to on the opposite strand?

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  16. What base is A always linked to on the opposite strand?

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  17. What base is T always linked to on the opposite strand?

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  18. What bonds are there between bases?

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  19. What does the order of bases control?

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  20. A sequence of how many bases codes for an amino acid?

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  21. What does the specific order of amino acids form?

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  22. What happens to the protein formed if DNA changes?

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  23. What can change if the order of amino acids changes?

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  24. What else can change if the order of amino acids changes?

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  25. What can proteins be?

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