Transport in Animals

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1. What is dissociation?

  • Release of carbon dioxide from the haemoglobin
  • Release of oxygen from the haemoglobin
  • Release of hydrogen from the haemoglobin
  • Attraction of oxygen to the haemoglobin
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2. What would an ECG trace be used to find?

  • The size of the heart muscle
  • Whether part of the heart muscle is unhealthy
  • The blood pressure within the heart

3. How is the artery adapted to maintain a high pressure?

  • Valves
  • Wide lumen
  • Narrow lumen
  • Thin walls

4. What is the job of the SAN?

  • To initiate a wave of excitation at regular intervals
  • To stop the conduction of the electrical signal
  • To coordinate the atria and ventricles
  • To expand and contract 55-80 times a minute

5. Which of the following has a closed, single circulatory system?

  • Fish
  • Locust
  • Human

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