Unit 5 Biology AQA

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  • Created by: Mankel19
  • Created on: 14-03-16 14:34

1. Slow-twitch muscle is red in colour due to...

  • Many capillaries providing oxygen and glucose for respiration.
  • a high ability to store glucose as glycogen
  • Being thicker than fast-twitch muscle
  • Higher abundance of mitochondria
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2. The medulla oblongata increases impulse frequency, via the sympathetic nervous system,to the SAN when..

  • Carbon dioxide levels are too high in the blood plasma.
  • Blood pressure is too high.
  • Carbon dioxide levels are low in the blood plasma.
  • The organism is resting.

3. Which bands of the sarcomere decrease in length during contraction?

  • I-band and H-zone
  • Just the H-zone
  • I-band, A-band and H-zone
  • I-band and A-band

4. A random movement in response to a non-directional stimulus is known as..

  • Kinesis
  • Positive Feeback
  • Phototropism
  • Taxis

5. Which hormone do beta-cells in the Islets of Langerhans secrete?

  • Insulin
  • Adrenaline
  • Progesterone
  • Glucagon

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