Multiple Choice
A bacterium that thrives in your stomach is probably a(n):
10. Dynamics of Microbial Growth
pH Requirements for Microbial Growth
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The optimum pH for an alkaliphile would be at:
A
pH 10.
B
pH 3.
C
pH 7.
D
pH 5.
Verified step by step guidance1
Understand the definition of an alkaliphile: Alkaliphiles are microorganisms that thrive in alkaline environments, typically with a pH above 9.
Review the pH scale: The pH scale ranges from 0 to 14, where 7 is neutral, values below 7 are acidic, and values above 7 are alkaline.
Identify the characteristics of the given pH options: pH 3 is acidic, pH 5 is slightly acidic, pH 7 is neutral, and pH 10 is alkaline.
Determine which pH value aligns with the environment where alkaliphiles thrive: Since alkaliphiles prefer alkaline conditions, the optimum pH would be above 9.
Conclude that the optimum pH for an alkaliphile, based on the given options, would be pH 10, as it is the only alkaline option provided.
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