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13 Cards in this Set
- Front
- Back
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Name 3 featurs of a bacteria cell |
-bacteria DNA -flagelum -cell wall |
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What is a virus? |
Non-living cell with verry small tructors made of a protien coat surrounding a strand og genetic material |
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Name the 4 stages of and infectios desies |
1. the microbes enter the bodet 2. It reproduces without caulsing symptoms, this is called the incubation period 3. The microbes caulse the production of manny toxins 4. The toxins caulse symptoms such as fever |
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Name the 4 stages to make yogurt? |
1. Sterilise all the equiptment 2. Pasteurise the milk by heeting it up to 78 *c 3. Then cool it down and incubate it with a culture of bacteria 4. This is followed by sampling theb adding flavors or colours and packaging |
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What is the word equation cor fermentation? |
Glucose-> ethanol+carbon dioxide |
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What is gasohol? And what are its benefits |
Its a mix between petrol and alcahol and it is good for when there isnt alot of fuel left |
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Name 3 benifits of using biofuel |
1. Its an alternative use to biofuels 2. The waist makes no net increase in green house gass 3. They dont release participates |
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Whats the balenced chemical equation for fermentation? |
C6 H12 06 --> 2C2 H5 OH + 2CO2 |
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What is loam? |
Its a mixture of clay and sand and it has a large amount of partly decomposed organisms in |
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Why are humas important to living organisms in soil? |
Humas decompose the relice minerals and they increase the air content of the soil |
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Name 4 things earth worms do |
1. Burry organic material for decomposition 2. Earate and drain the soil 3. They mix up soil layers 4. Neutralise acid soil |
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Name 2 andvantages and dissidvantages of living in water |
-There is no risk of water shortages, the temperature varies less that air dose -Water is dencer than air so resits movement, the water content of the bodey varies and needs to be controled |
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What are zoo and phytoplankton |
Zooplankton are tiny animals that eat phytoplankton |
