plant extracts ISA

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what is a controlled variable
one variable that must be controlled is the incubation time
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describe the preliminary test
help me to realise the time needed. less than 48 hours.. longer than 48... overall the recommened time was 48 hours as this time will allow it to hav a full affect and make a clear zone of inhibition
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advantages of comparing results
allows you to check results//see wether there are similar patterns//enables reproducbility//
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list a risk
bunsen burner//hot twweezers
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what it does
burn somone
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prevent
wear gloves//place on safety flame
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Card 2

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describe the preliminary test

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help me to realise the time needed. less than 48 hours.. longer than 48... overall the recommened time was 48 hours as this time will allow it to hav a full affect and make a clear zone of inhibition

Card 3

Front

advantages of comparing results

Back

Preview of the front of card 3

Card 4

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list a risk

Back

Preview of the front of card 4

Card 5

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what it does

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