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Nucleic acids are important information-carrying molecules

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Question 8

The gene that codes for human pancreatic amylase is 10.428 kilobases10.428\text{ kilobases}10.428 kilobases in length. The DNA double helix makes one complete turn every 10 base pairs10\text{ base pairs}10 base pairs. Every complete 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 the amylase-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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