Understanding Microbes-B6
- Created by: Shannon
- Created on: 05-06-13 11:22
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- Understanding Microbes
- Bacteria-flagellum-movement, cell wall-maintain shape, stops it from bursting
- DNA- control the cell's activities and replication
- Reproduce quickly-must be handled carefully
- Yeast growth rate can be altered by food availability, temperature, pH and removing waste products
- Growth rate doubles every 10 degrees C temperature rise, until optimum is reached
- Virus-small structures, protein coat surrounding genetic material
- A virus reproduces- attaches itself to a specific living host
- Inject its genetic material into the cell
- Cause the cell to make the components of new viruses
- Cause the host cell to split ope, die and release the viruses
- Cause the cell to make the components of new viruses
- Inject its genetic material into the cell
- Only reproduce in specific living cells
- A virus reproduces- attaches itself to a specific living host
- Asexual reproduction- (split in two) binary fission
- Can reproduce on an agar plate, but all equipment must be sterilised (aseptic technique)
- Bacteria are successful- some can make their own food, wide range of habitats, survive on a variety of different energy sources
- Bacteria shapes- rod, spherical, spiral, curved
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