Microbiology and Biotechnology. Microbiology Aims 1. Investigate the presence of micro- organisms in...
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Transcript of Microbiology and Biotechnology. Microbiology Aims 1. Investigate the presence of micro- organisms in...
![Page 1: Microbiology and Biotechnology. Microbiology Aims 1. Investigate the presence of micro- organisms in air and soil 2. List three common illnesses caused.](https://reader038.fdocuments.in/reader038/viewer/2022103004/56649cd95503460f949a2b68/html5/thumbnails/1.jpg)
Microbiology and
Biotechnology
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Microbiology Aims
1. Investigate the presence of micro-organisms in air and soil
2. List three common illnesses caused by viruses and three caused by bacteria
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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
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click on the image to find out…
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Bacteria• A single cell organism • Multiply quickly• Helpful in Antibiotics and Decay• Not so good as they Spoil food,
cause tooth decay and diseases
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click on the title to see…
Each cell divides to give two/four/eight…..
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Micro-organisms need:
• Food• Correct temperature• Suitable medium on which to grow…
Bacteria grow quickly between 300C and 400C
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Micro-organisms can be easily seen growing in colonies if a clear medium is usede.g.agar jellygelatin
http://www.sciencehound.com/science_project_community/node/5333
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Colonies of bacteria are seen as ‘blobs’ on the surface of the medium…
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Different soils contain different bacteria
http://www.ceh.ac.uk/sections/epfs/Soilqualityandbiologicalindicators.htm
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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.
http://www.uio.no/conferences/imc7/NFotm2000/February2000.htm
Penicillin is produced by the fungus we call ‘blue mould’
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Virus
• They are parasites that attack cells
• They multiply inside our cells and then burst out killing the cell
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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.
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http://library.thinkquest.org/26467/enviromental_health.htm
This is one way a virus can spread. Are there others?
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Which are caused by bacteria and which by virus?
food poisoningmeningitis
bronchitis
flu
cold
septic throat
AIDS
click here to check your answers
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BACTERIAL VIRAL
food poisoning cold
septic throat flu
bronchitis AIDS
meningitis can be caused by either
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YOUR TASK: find out which micro-organism causes the following:
verucca
spotspneumonia
warts
rabies
ulcers
TB
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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
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Bacteria in vaccinationsYeast in bread production
Fungi in antibiotic productionYeast in alcohol production
Do you know more uses?
Enzymes in contact lens cleaners
Bacteria in yogurt production
MedicineIndustry
Some uses of biotechnology in…
Biotechnology is the use of living things
to make useful products
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H/W
• P144• Q 2-5