Question

multiple select question
select all that apply
microbial growth in a liquid broth medium is indicated by which of the following? more than one answer may be correct.
sediment
volume gain
cloudiness
color change
volume loss
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Explanation:

• Sediment: Some microbes settle at the bottom of the broth as they grow, forming sediment.
• Cloudiness (turbidity): As microbes multiply in the liquid broth, the broth becomes cloudy due to the increased number of microbial cells.
• Color change: Microbial growth can lead to metabolic activities that produce substances causing a color change in the broth (e.g., pigment production or pH - related color changes from indicators in the medium).
• Volume gain and volume loss are not typical indicators of microbial growth in a liquid broth medium as microbial growth doesn't significantly change the volume of the broth.

Answer:

A. sediment, C. cloudiness, D. color change