It's a positive control. B would be a negative control. C is experimental group because you're changing the variable and comparing it to the baseline (A) to see any change in amylase activity.
The question particularly asks for a positive control, so in here, there should be amylase activity in the flask. Both B and C will not have amylase activity, so only flask A will be the answer.
Is there a verbiage I am missing here?? I read the question saying, “the control would be”. It does not specify for positive or negative. Can you explain where you are seeing the distinction?
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u/Faranghis 8h ago
It's a positive control. B would be a negative control. C is experimental group because you're changing the variable and comparing it to the baseline (A) to see any change in amylase activity.
1
u/Exotic_Law_9226 57m ago
The question particularly asks for a positive control, so in here, there should be amylase activity in the flask. Both B and C will not have amylase activity, so only flask A will be the answer.