Multiple Choice
Which of the following is the nutrient-rich material commonly used to grow microbial cells in the laboratory?
10. Dynamics of Microbial Growth
Introduction to Cultivating Microbial Growth
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Which of the following is NOT suitable for culturing most bacteria in a laboratory setting?
A
Blood agar
B
Agar
C
Distilled water
D
Nutrient broth
Verified step by step guidance1
Step 1: Understand the purpose of culturing bacteria, which is to provide an environment that supports bacterial growth by supplying essential nutrients, moisture, and appropriate physical conditions.
Step 2: Review the options given: Blood agar, Agar, Distilled water, and Nutrient broth. Recognize that Blood agar and Agar are solid media commonly used to culture bacteria, and Nutrient broth is a liquid medium that supports bacterial growth.
Step 3: Analyze the role of distilled water. Distilled water lacks nutrients and minerals necessary for bacterial metabolism and growth, making it unsuitable as a culture medium.
Step 4: Recall that suitable culture media must contain nutrients such as carbon, nitrogen, vitamins, and minerals, which distilled water does not provide.
Step 5: Conclude that distilled water is NOT suitable for culturing most bacteria because it does not support their growth, unlike the other options which are designed to provide nutrients.
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