To Ensure a Controlled Experiment,all of the Following Conditions (Variables)should

question 45

Multiple Choice

To ensure a controlled experiment,all of the following conditions (variables) should be identical in Group 1 and Group 2:

• A)type of bacteria,temperature,and incubation period
• B)temperature and amount of initial inoculum (bacteria used)
• C)type of bacteria,incubation period,amount of bacteria used
• D)degree of turbidity,incubation period,and amount of bacteria

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