Biology Unit 4

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  • Created by: Sacha
  • Created on: 10-06-13 18:54

1. What is meant by the 'competitive exclusion principle'?

  • No two species can occupy the same niche indefinitely when resources are limiting
  • Prey population will increase as predator population decreases
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2. What is the name given to each stage in a food chain?

  • Decomposers
  • Producers
  • Trophic level
  • Consumers

3. This type of competition occurs when individuals of the same species compete for resources

  • Intraspecific
  • Interspecific

4. The type of ATP synthesis that takes place during photosynthesis in chlorophyll-containing plant cells is called _____?

  • Photophosphorylation
  • Oxidative phosphorylation
  • Substrate-level phosphorylation

5. Why is ATP sometimes referred to as the 'immediate energy source' of the cell?

  • The instability of the phosphate bonds means that it is broken down very quickly and easily
  • A lot of it is stored in the cell at any one time
  • The energy released is used up very quickly

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