Wednesday, May 12, 2010

Variable, control etc. experiment help?

the test tubes shown in the diagram contain water, starch, and Benedict's solution. When heated, Benedict's solution changes color from red to blue in the presence of sugar. Test tube B, in addition to the other ingredients, contains diastase, an enzyme that changes starch to sugar. Both test tubes are placed in a beaker of water and heated to boiling.








1. what is the variable in this experiment?


2. Which text tube is the control in this experiment?


3. Predict the results of the experiment.








please help?Variable, control etc. experiment help?
presence or absence of diastase is the variable





the tube without diastase is the control





I would expect a color change in tube B and not in A
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