AQA Biology A2 Unit 5 Quiz

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

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

1. 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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Other questions in this quiz

2. Following depolaristion, what ions are released from the sarcoplasmic reticulum?

  • Calcium ions
  • Potassium ions
  • Sodium ions

3. Slow twitch fibres contain:

  • Large stores of myoglobin and glycogen, many mitochondria and a rich blood supply
  • Large stores of phosphocreatine, and high concentrations of enzymes used in anaerobic respiration

4. Summarise the differences between DNA and RNA.

  • The backbone of DNA is based upon ribose whereas RNA's backbone is based upon deoxyribose, RNA uses uracil in place of adenine.
  • The backbone of DNA is based upon deoxyribose whereas RNA's backbone is based upon ribose, RNA uses uracil in place of thymine.
  • The backbone of DNA is based upon ribose whereas RNA's backbone is based upon deoxyribose, RNA uses uracil in place of thymine.

5. Progesterone...

  • ...is secreted from the pituitary gland and inhibits LH and FSH secretion up until a critical threshold, upon which they are in fact stimulated.
  • ...is secreted from the corpus luteum and maintains the uteral lining (if a fertilised egg has attached).
  • ...is secreted from the pituitary gland and maintains the uteral lining (if a fertilised egg has attached).
  • ...is secreted from maturing follicles and inhibits LH and FSH secretion up until a critical threshold, upon which they are in fact stimulated.

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