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17 June, 17:58

A chemical indicator called phenol red is typically used in microbiology labs. at ph 8, it appears fuchsia; at neutral, it appears red; and at ph 6, it is yellow. if this indicator were incorporated into a medium with a sugar and turned from red to yellow after bacteria grew on the medium for 24 hours, what could you conclude?

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  1. 17 June, 18:10
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    Th bacteria have somehow affected the pH levels. They made the indicator turn yellow, a sign of low pH, or greater acidity.
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