B6 OCR- Understanding Microbes
- Created by: Eleanor Durham
- Created on: 02-05-17 19:56
View mindmap
- Understanding Microbes
- YEAST
- Is a single celled fungus
- Growth rate can be altered by
- changing temp
- changing pH
- removing waste products
- changing food availability
- Growth rate doubles every 10'C rise in temp until optimum is reached
- VIRUSES
- Very small structures made of a protein coat surrounding a strand of genetic material
- Can only reproduce under certain conditions
- in other living cells
- only attack, plant animal or bacterial cells
- When it reproduces it will
- attach itself to a specific host cell
- inject its genetic material into the cell
- use the cell to make components of new viruses
- cause the host cell to split open and die to release the virus
- BACTERIA
- Can reproduce very quickly, meaning they can spoil food quickly/causedisease so they have to be handled carefully
- Aseptic technique- equipment is sterilised to avoid contamination by other microbes
- Reproduce by splitting in two- asexual reproduction called binary fission
- Bacterial cells can be spherical, rod shaped, spiral, or curved rods
- Bacteria cells have certain features to enable them to survive
- A flagellum for movement
- A cell wall to maintain shape
- DNA to control it's activities and replication
- YEAST
- BACTERIA
- Can reproduce very quickly, meaning they can spoil food quickly/causedisease so they have to be handled carefully
- Aseptic technique- equipment is sterilised to avoid contamination by other microbes
- Reproduce by splitting in two- asexual reproduction called binary fission
- Bacterial cells can be spherical, rod shaped, spiral, or curved rods
- Bacteria cells have certain features to enable them to survive
- A flagellum for movement
- A cell wall to maintain shape
- DNA to control it's activities and replication
Similar Biology resources:
Teacher recommended
Comments
No comments have yet been made