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the following hypotheses. Write the independent and dependent variables that would be used in arn experiment designed to test each hypothesis Establish an experimental control/control for each hypothesis. Establish a positive and a negative control for each hypothesis. Identify a controlled variable for each hypothesis

1. If the concentration of salts in solution surrounding the red blood cell is related to the osmotic pressure in the red blood cell, then decreasing salt concentrations of the solution will cause the cell to swell and burst.

2. If the amount of enzyme is related to the rate of the chemical reaction, then increasing the amount of enzyme will increase the speed of the reaction.


3. If the type of sugar provided to growing yeast is related to the amount of alcohol produced by the yeast, then growing yeast in different sugars will result in different amounts of alcohol produced.



4. If the time under UV light is related to bacterial death, then increasing the time under UV light will increase the number of bacteria killed.

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