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Controlling Microbial Growth WebquestName:___________<br />Use Google and the various sites listed to help answer the ques...
What was the first type of antispeptic used in hospitals (chemical group)?      What types of chemicals are more commonly ...
What is chlorhexidine?  Draw the structure and give an example of where it is commonly found.
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Controlling microbial growth webquest name

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Controlling microbial growth webquest name

  1. 1. Controlling Microbial Growth WebquestName:___________<br />Use Google and the various sites listed to help answer the questions below.<br /><ul><li> Define an antiseptic
  2. 2. What was the first type of antispeptic used in hospitals (chemical group)? What types of chemicals are more commonly used today?
  3. 3. What is chlorhexidine? Draw the structure and give an example of where it is commonly found.
  4. 4. Define a disinfectant.
  5. 5. What is hypochlorate? List three common uses of hypochlorate. At which pH and temperature are they most efficient and why?
  6. 6. Define bacteriocidal and bacteriostatic
  7. 7. Visit the following website:
  8. 8. http://www.yteach.co.uk/page.php/resources/view_all?id=aseptic_conditions_osmosis_gram_positive_bacterium_spontaneous_generation_pasteurisation_autoclave_fungi_spores_bacteria_manometer_thermometer_refrigerator_freezer_antibiotic_page_1&full=1&w_size=1024&h_size=768
  9. 9. Watch the slideshow and then try the activities.
  10. 10. Summarise the process of pasteurization below.
  11. 11. Have a look at this website
  12. 12. http://www.gcsescience.com/pwav53.htm
  13. 13. What is gamma radiation used for? Why do you think its use is controversial?
  14. 14. Visit the following website
  15. 15. http://sakshat.amrita.ac.in/VirtualLab/index.php?sub=BIOTECH&brch=MIC&sim=Streak_Plate_Method&cnt=theory
  16. 16. Use the website to define the following key terms and ideas:
  17. 17. Culture media:
  18. 18. Agar:
  19. 19. Culture:
  20. 20. Streak plate:
  21. 21. Lawn:
  22. 22. Watch the animation on streaking and then try it yourself here! http://learn.chm.msu.edu/vibl/content/streakplate.html
  23. 23. “Viruses are obligate parasites” Explain how culturing viruses in a lab is different to culturing bacteria in a lab.
  24. 24. Counting cells
  25. 25. Using a haemocytometer
  26. 26. http://hlsweb.dmu.ac.uk/ahs/elearning/RITA/Resources.html+
  27. 27. Read the sections on ‘Introduction to a hameocytometer’ and ‘Counting cells’</li></ul>Draw a picture of a haemocytometer <br /><ul><li>Have a go on this virtual lab on turbidometry http://water.me.vccs.edu/courses/env211/lab4_print.htm
  28. 28. Describe how microbiologists use turbidometry to assesss microbial contamination of waater.

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