Split the lactose into glucose and galactose If glucose is present in a solution, what color change will you observe on a glucose test strip? It will turn green or yellow
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Step 1: Glucose test strips are used to detect the presence of glucose in a solution. Show more…
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Imagine that when you initially observe a fermentation test, you see a yellow color in the glucose tube and a red, slightly purple color in the sucrose and lactose tubes. You put the tubes back in the incubator for a week and check them again, and discover that the glucose tubes are no longer yellow, they're now slightly purple as well. Explain this result by thinking about the other nutrients that are in the tube.
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