B6 Revision Part A
- Created by: 11APhillips
- Created on: 05-12-15 20:25
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- B6 Revision
- Understanding Microbes
- Parts of a bacterial cell
- Flagellum - Aids Movement
- Bacterial DNA - Cell activity and replication
- Cell Wall - keeps shape and prevents from bursting.
- Capsule - Protects from phagocytes
- Different Shapes
- Spherical - MRSA
- Rod - Anthrax
- Curved Rod - Cholera
- Corkscrew - Syphilis
- Yeast
- Fungi
- Glucose + oxygen -> carbon dioxide + Water
- Needs good temp and pH and food availability and removal of waste products - Enzymes
- Virus
- Inject themselves into cells
- Alter DNA to replicate virus DNA
- Release new Viruses from cell
- Parts of a bacterial cell
- Harmful Microorganisms
- Transmission of Disease
- Water Borne
- Air Borne
- Food Contamination
- Through Contact
- How infectious diseases make you ill
- Entry - disease enters body
- Incubation - Rapid Growth
- Release - toxins are released
- Symptons - You feel ill
- Natural Disasters
- Refugee camps mean that people are close together
- Disruption to health services mean people can't get medicine
- Sewer Systems Broken
- Damage to electrics (food preparation)
- Pioneers
- Louis Pasteur - The Germ Theory
- Joseph Lister - Antispectics (designed to kill bacteria - preventative)
- Alexander Fleming - Penicillin/antibiotic (designed to cure illness)
- Antibiotic resistance
- Stronger bacteria are naturally selected and survive while weaker die (gene mutation)
- Stronger bacteria multiply
- whole batch of bacteria are strong
- Transmission of Disease
- Useful Microorganisms
- Making Alcohol
- Sugar rich solution used with warm water, not boiling as enzymes in yeast would denature.
- Addd glucose and leave to ferment on heat mat due to denaturing.
- Bubble trap used to stop oxygen getting in as it is anaerobic.
- Once fermented, let sediment go to bottom and filter off
- pasteurise (heat to high temp) and bottle.
- Making Yoghurt
- Sterilise everything and pasteurise milk
- Add lacto bacillus and incubate the culture.
- Sample
- Add flavour and packaging
- Sample
- Add lacto bacillus and incubate the culture.
- Sterilise everything and pasteurise milk
- Making Alcohol
- Understanding Microbes
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