AQA Biology A2 Unit 5 Quiz

A quiz testing most (maybe more to come) areas of the unit 5 specification.

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  • Created by: Josh
  • Created on: 03-05-13 18:07

1. Which of the factors affecting nervous impulse velocity has the most significant effect?

  • Myelination
  • Axon diameter
  • Temperature
1 of 20

Other questions in this quiz

2. The act of [1] binding to a receptor on [2] causes a conformational change, releasing the [3] molecule, allowing [2] to bind to [4] in the nucleus and initiate transcription.

  • 1: DNA, 2: transcriptional factor, 3: inhibitor, 4: oestrogen
  • 1: oestrogen, 2: a transcriptional factor, 3: inhibitor, 4: DNA
  • 1: a transcriptional factor, 2: DNA, 3: inhibitor, 4: oestrogen

3. Splicing removes [1] from [2], turning it into [3]

  • 1: thymine, 2: mRNA, 3: tRNA
  • 1: introns, 2: pre-mRNA, 3: mRNA
  • 1: exons, 2: pre-mRNA, 3: mRNA

4. A point mutation occurs. It may be either silent, nonsense or mis-sense. How many of the three will affect the primary structure of the resulting polypeptide?

  • 2
  • 3
  • 1
  • 0

5. What does it mean to suffer from 'Type I' diabetes mellitus?

  • Type I diabetics do not produce sufficient insulin, suspected to be due to an autoimmune response to pancreatic cells and must inject insulin to maintain their BGC.
  • Type I diabetics have cells which are unresponsive to insulin (often due to obesity), and so must manage their carbohydrate intake to maintain their BGC

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