to test the effect of pH on amylase we first place buffer solution in a test tube. why buffer solution?
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Card 7
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we then add starch, then amylase. what6 do we need to do as soon as we've added the amalse?
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Card 8
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to test if any starch remains in the test tube every 30 seconds, we use a spotting tile filled with a drop of ___ (what's used to test for starch...?)
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Card 9
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we can then insert solution from test tube after 30 seconds to spotting tile with a pipet or glass rod. what colour should the iodine + solution turn if there is starch present?
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Card 10
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repeat process every 30 seconds to see how long it takes for starch to be digested. how would we know when there is no starch present?
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Card 11
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the experiment is repeated with different...
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Card 12
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what's the independent variable in this experiment?
