Transport in Animals - F211

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  • Created by: KHill
  • Created on: 27-11-14 15:08

1. Animals that do which 2 things need more energy?

  • Animals which have a fast metabolism and which sleep a lot
  • Animals which keep themselves warm and which are very active
  • Animals which regulate their body temperature and have a fast metabolism
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2. Large surface-area-to-volume ratio limits what in organisms?

  • Digestion
  • Growth
  • Reproduction
  • Heat loss

3. For larger animals, diffusion is...

  • the best transport system
  • not an efficient system alone as not all of the cells are near their environment
  • not an efficient system because it is too slow
  • a better transport sytstem as the cells get the nutrients they are lacking in.

4. When animals grow larger...

  • their volume increases but not their surface area
  • their cells grow larger
  • their surface area and volume increases
  • their surface area increases

5. what happens to oxygen/nutrients which diffuse into multicellular organisms?

  • The substances diffuse first in the deeper layers of cells, working their way to the outer layers
  • The oxygen/nutrients are used up by the outer layers of cells and so will not reach cells deeper within the body
  • The substances diffuse into cells in all layers
  • The substances diffuse
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