When performing a broth dilution test why is it necessary to include a growth control tube? A sterility control tube?

When performing a broth dilution test why is it necessary to include a growth control tube? A sterility control tube?
Create a 2- to 3-page document in Microsoft Word for providing answers to questions in the following review sheets:Exercise 1 – Disinfectants1. What does bactericidal mean? Bacteriostatic? Virucidal? Fungistatic?2. Why are control cultures necessary in evaluating disinfectants?3. What factors can influence the activity of a disinfectant?4. Why do microorganisms differ in their response to disinfectants?5. What microorganisms are most susceptible to disinfectants?Exercise 2 – Antimicrobial Agent Susceptibility Testing and Resistance1. What is meant by antimicrobial resistance? Susceptibility?2. Why are pure cultures used for antimicrobial susceptibility testing?3. Would it be acceptable to use a mixed culture for this test? Why?4. List three factors that can influence the accuracy of the test.5. When performing a broth dilution test why is it necessary to include a growth control tube? A sterility control tube?Support your responses with examples.Cite any sources in APA format.

 
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