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Nucleic acids are important information-carrying molecules

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Question 5

The gene coding for the DNA polymerase enzyme in a newly isolated marine bacteriophage is 8.568 kilobases8.568\text{ kilobases}8.568 kilobases in length. In this bacteriophage, the DNA double helix makes one complete helical turn every 10.2 base pairs10.2\text{ base pairs}10.2 base pairs. Every complete helical turn is 3.4 nm3.4\text{ nm}3.4 nm in length.

Use this information to calculate the length in micrometres (μm\mu\text{m}μm) of this DNA polymerase-coding gene. Give your answer to 3 significant figures.

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Markscheme

Nucleic acids are important information-carrying molecules Questions

  1. A Level
  2. /Biology
  3. /Nucleic acids are important information-carrying molecules

10 exam-style questions on AQA A Level Biology Nucleic acids are important information-carrying molecules, covering Structure of DNA and RNA and DNA replication. Each one has a worked solution and a mark scheme showing where the marks go.

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