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. The ability for a cell to differentiate into any other type of cell in an organism is referred to as what?

  • Otipotency
  • Totipotency
  • Omnipotency
1 of 20

Other questions in this quiz

2. A complete gene, comprised of 37.5% introns, in a particular DNA section undergoes transcription, splicing then translation. The original DNA section was 1.728kBp long. What is the number of amino acids in the resulting polypeptide?

  • 577
  • 359
  • 361
  • 360
  • 575
  • 576

3. During transcription, [1] 'unzips' the DNA strand and [2] moves in to create complementary [3]. The DNA strand has only ~[4] bases separated during this process.

  • 1: DNA helicase, 2: RNA polymerase, 3: pre-mRNA, 4: 10
  • 1: RNA polymerase, 2: DNA helicase, 3: mRNA, 4: 20
  • 1: DNA helicase, 2: RNA polymerase, 3: pre-mRNA, 4: 150

4. A hormone from question 24 is secreted from the alpha cells of the pancreas. What are its effects?

  • It decreases blood glucose concentration by stimulating glycogenolysis and increased respiration rate, in addition to promoting cellular uptake of glucose.
  • It increases blood glucose concentration by stimulating glycogenolysis and gluconeogenesis.
  • It decreases blood glucose concentration by stimulating the uptake of glucose by cells, formation of new glycogen, formation of lipid stores and by increasing respiration rate.

5. During vasoconstriction...

  • ...the arterioles feeding skin capillaries contract using C-muscles and the shunt vessels dilate
  • ...the arterioles feeding the skin capillaries dilate by relaxing C-muscles, and the shunt vessel contracts
  • ...the arterioles feeding the skin capillaries contract, and so do the shunt vessels.

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