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6. The main hormones responsible for the regulation of blood glucose concentration are:

  • Insulin, adrenaline and oestrogen
  • Insulin, glucagon and adrenaline
  • Insulin and glucagon

7. Acetylcholine causes the opening of which channel in the post-synaptic membrane?

  • Sodium ion channel
  • Potassium ion channel
  • Calcium ion channel

8. The channels responsible for inducing a generator potential in the pacinian corpuscle are known as what?

  • Stretch-mediated sodium ion channels
  • Voltage-gated sodium ion channels
  • Sodium-potassium pumps

9. The chemical responsible for positive phototropism in plant shoots is ___?

  • Oxaloacetate
  • Indoleacetic Acid
  • Cytochrome b

10. When using stem cells to repair damaged tissues, the patient's own stem cells are often used. Why is this?

  • To prevent the rejection of the treatment due to the presence of foreign antigens
  • To prevent rejection of the treatment based on the nocebo effect
  • Using stem cells from another individual is illegal

11. 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.

12. The second messenger model, as applied to the action of adrenaline, is:

  • Adrenaline binds to cell-surface receptors, causing an enzyme on the inside of the cell membrane to activate and convert ATP into cAMP, which then acts as a second messenger, activating enzymes responsible for glycogenolysis
  • Adrenaline reacts with ATP to form cAMP and glycerol, then the cAMP acts as a second messenger, causing the activation of enzymes responsible for glycogenolysis
  • Adrenaline binds to cAMP, forming the adrenaline-cAMP complex, acting as a second messenger to activate the enzymes responsible for glycogenolysis

13. Summarise the differences between DNA and RNA.

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

14. Oestrogen...

  • ...is secreted from the corpus luteum 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.
  • ...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 pituitary gland and maintains the uteral lining (if a fertilised egg has attached).

15. During striated muscular contraction:

  • The sarcomere lengthens, the H zone remains the same size, the A and I bands both shorten
  • The sarcomere, I band and H zone become narrower, the A band maintains its width
  • The sarcomere and H zone become narrower, the A and I bands maintain their

16. How does the chemical from question 2 affect tissues in the ROOT?

  • It causes autolysis
  • It inhibits elongation
  • It promotes elongation

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

  • Temperature
  • Myelination
  • Axon diameter

18. If a [1] mutates it may become a [2] which stimulates [3], leading to uncontrolled cell division, or a [4]

  • 1: oncogene, 2: excitatory oncogene, 3: autolysis, 4: tumour
  • 1: proto-oncogene, 2: oncogene, 3: cell division, 4: tumour
  • 1: tumor suppressor gene, 2: oncogene, 3: cell division, 4: tumour

19. 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

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

  • Sodium ions
  • Calcium ions
  • Potassium ions