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6. Where does the electron transport chain take place?

  • cristae
  • matrix
  • cytoplasm

7. What does directional selection do?

  • Change the characteristics of a population
  • Preserve the characteristics of a population

8. What organism helps the process of nitrogen in the atmosphere become ammonia?

  • Saprophytes
  • Denitrifying bacteria
  • Nitrogen fixing bacteria
  • Nitrifying bacteria

9. Where does the light dependent stage take place?

  • chlorophyll
  • thylakoids
  • mitochondria
  • stroma

10. What is the end product of glycolysis?

  • pyruvate
  • acetate
  • phosphorylated glucose
  • triose phosphate

11. Describes how an organism fits into its environment and its role.

  • Population
  • Ecological niche
  • Community
  • Habitat

12. What must happen during speciation for the gene pools to become different?

  • The environment must change.
  • A mutation must occur.
  • A mutation must be selected for by the environment.
  • Reproductive isolation.

13. How many ATP molecules are produced at the end of glycolysis?

  • 6
  • 4
  • 2
  • 0

14. What does acetate combine with in the link reaction?

  • Coenzyme C
  • Coenzyme A
  • Coenzyme B
  • Coenzyme X

15. Which of these in an effect of using nitrogen-containing fertilisers?

  • leaching
  • eutrophication
  • All 3
  • reduced species diversity

16. Which of these is a feature of intensive rearing?

  • All of these
  • Warm environment
  • Restricted movement
  • High protein food

17. Intraspecific competition is...

  • between the same species
  • between different species