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6. What genetic diseases most often result in males being affected while women can be carriers?

  • Sex linked genes (to the Y chromosome)
  • Sex linked genes (to the X chromosome)
  • Recessive genes
  • Dominant genes

7. How many molecules of ATP are formed in the Krebs cycle?

  • 1
  • 4
  • 2
  • 3

8. Intraspecific competition is...

  • between the same species
  • between different species

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

  • leaching
  • eutrophication
  • All 3
  • reduced species diversity

10. Where does the light dependent stage take place?

  • thylakoids
  • chlorophyll
  • stroma
  • mitochondria

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

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

12. Where does the electron transport chain take place?

  • cristae
  • matrix
  • cytoplasm

13. What is the end product of glycolysis?

  • acetate
  • pyruvate
  • triose phosphate
  • phosphorylated glucose

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

  • 0
  • 6
  • 2
  • 4

15. What does directional selection do?

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

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

  • Ecological niche
  • Population
  • Habitat
  • Community

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

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