B6

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What is the Aseptic technique
Wearing gloves, tying back long hair, sterilizing equipment, sealing the bacteria dish, disposing safely of bacteria culture after use.
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How is yogurt made?
Equipment is sterilized, milk is pasteurized (heated to 72'c for 15 secs), start culture of lactoballicus bacteria is added, mixture is incubated (heated to 40'c) breaks down lactose into lactic acid, causes milk to clot. then flavours+colours added
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What is equation for the aerobic and anaerobic respiration of yeast?
equations
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How is biogas made?
bacteria are used to ferment organic matter into waste, then another bacteria ferments that into more waster ect... until biogas is made. needs a steady temp of 30-40'c so production is fast without killing bacteria.
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Explain the process of Eutrophicaton
fertilizers enter water, algae grow rapidly, algae die and ecay, bacteria feed on dead algae using up oxygen in water, animals are unable to respire and they die.
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What are indicator species and how are they used?
they are different organisms that live better in different pollution levels, and they are used to indicate the pollution of water by their presence or absence.
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How do pesticides cause water pollution and death of organisms?
if pesticides seep into rivers they are taken in by water plants, so predators eat a lot of plants, and another predator eats a lot of that animal gets to an organism at the top of the food chain, consumes lots of pesticides and dies.
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What are the three enzymes in biological washing powders? what do they break down? what is the source of the stains?
Amalayses break down carbohydrate from jam and chocolate into simple sugars. lipases break down lipids form butter/oil into fatty acids and glycerol. proteases break down protein from blood/grass into amino acids.
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How are enzymes used in medical products for diabetes?
diabetes is shown by the presence of sugar in urine. enzymes are used in reagent strips, which change color is there is sugar present.
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How are enzymes used in the food industry?
the enzyme sucrase breaks down sucrose into glucose and fractose which are sweeter so less i needed. the enzyme rennet clots milk to make cheese. the enzyme pectinase breaks down pectin from the cell wall of apples and oranges so it releases juices.
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How are immobilized enzymes used to make lactose free milk?
lactase breaks down lactose found in milk. lactose intolerance is not having lactase. so lactose free milk uses immoblisied enzymes in contiuous flow to break down lactose in glucose and galactose which can be absorbed by all.
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Other cards in this set

Card 2

Front

How is yogurt made?

Back

Equipment is sterilized, milk is pasteurized (heated to 72'c for 15 secs), start culture of lactoballicus bacteria is added, mixture is incubated (heated to 40'c) breaks down lactose into lactic acid, causes milk to clot. then flavours+colours added

Card 3

Front

What is equation for the aerobic and anaerobic respiration of yeast?

Back

Preview of the front of card 3

Card 4

Front

How is biogas made?

Back

Preview of the front of card 4

Card 5

Front

Explain the process of Eutrophicaton

Back

Preview of the front of card 5
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