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Microbiology and Biotechnology

Microbiology and Biotechnology. Microbiology Aims. Investigate the presence of micro-organisms in air and soil List three common illnesses caused by viruses and three caused by bacteria. What is a micro-organism?. An organism which is very small. Examples of micro-organisms:

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Microbiology and Biotechnology

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  1. Microbiology and Biotechnology

  2. Microbiology Aims • Investigate the presence of micro-organisms in air and soil • List three common illnesses caused by viruses and three caused by bacteria

  3. What is a micro-organism? • An organism which is very small. • Examples of micro-organisms: • Bacteria – e.g. E.coli, Samonella • Virus - e.g. flu virus, HIV • Fungi

  4. click on the image to find out…

  5. Bacteria • A single cell organism • Multiply quickly • Helpful in Antibiotics and Decay • Not so good as they Spoil food, cause tooth decay and diseases

  6. click on the title to see… Each cell divides to give two/four/eight…..

  7. Micro-organisms need: • Food • Correct temperature • Suitable medium on which to grow… Bacteria grow quickly between 300C and 400C

  8. http://www.sciencehound.com/science_project_community/node/5333http://www.sciencehound.com/science_project_community/node/5333 Micro-organisms can be easily seen growing in colonies if a clear medium is used e.g. agar jelly gelatin

  9. Colonies of bacteria are seen as ‘blobs’ on the surface of the medium…

  10. http://www.ceh.ac.uk/sections/epfs/Soilqualityandbiologicalindicators.htmhttp://www.ceh.ac.uk/sections/epfs/Soilqualityandbiologicalindicators.htm Different soils contain different bacteria

  11. http://www.uio.no/conferences/imc7/NFotm2000/February2000.htmhttp://www.uio.no/conferences/imc7/NFotm2000/February2000.htm Penicillin is produced by the fungus we call ‘blue mould’ ANTIBIOTICS…these are chemical made by some micro-organisms to kill bacteria. • Penicillin was ‘discovered’ in 1928 by Sir Alexander Fleming • White blood cells do the same job.

  12. Virus • They are parasites that attack cells • They multiply inside our cells and then burst out killing the cell

  13. This image is of a bird flu virus http://www.influenza-pandemic.com/page1.html BIRD FLU VIRUS…an epidemic of flu began spreading through the worlds bird population in 2005.

  14. http://library.thinkquest.org/26467/enviromental_health.htm This is one way a virus can spread. Are there others?

  15. Which are caused by bacteria and which by virus? cold food poisoning AIDS bronchitis meningitis septic throat flu click here to check your answers

  16. YOUR TASK: find out which micro-organism causes the following: warts ulcers pneumonia spots TB verucca rabies

  17. Fungi • Not all are small • No chlorophyll so live on organic matter. • Yeast and producing antibiotics the main uses • Also athlete’s foot and other poisons

  18. Some uses of biotechnology in… Industry Medicine Yeast in alcohol production Fungi in antibiotic production Yeast in bread production Bacteria in vaccinations Bacteria in yogurt production Enzymes in contact lens cleaners Do you know more uses? Biotechnology is the use of living things to make useful products

  19. H/W • P144 • Q 2-5

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