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6. Multiple copies of a required piece of DNA can be produced using.....

  • PCR
  • DNA probes
  • electrophoresis
  • replica plating

7. Which of these is not a microorganism?

  • arachnids
  • bacteria
  • prokaryotes
  • archeans

8. Which term best describes how penicillin is produced?

  • monoculture
  • fed batch culture
  • continuous culture
  • batch culture

9. Gene therapy can be used to treat cystic fibrosis. Which of these statements is not true?

  • Parents who are both heterozygous for cystic fibrosis cannot have a child with the disease.
  • Gene therapy involves inserting the dominant gene into the cells of the lungs
  • Cystic fibrosis is a diseaese where abnormally thick mucus is produced in the lungs
  • Cystic fibrosis is caused by a recessive allele

10. What happens during the lag phase of a population in a closed culture?

  • bacteria have stopped reproducing due to lack of enzymes
  • bacteria adjust to their new conditions and start to produce new enzymes.
  • bacterial cells start to die
  • bacterial cells grow and divide at their maximum rate