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Lab controls

The experiment was which carboydrates yeast can be used as a substrate to ferment yeast.

temp set at 20 degrees c
20 mls of glucose, sucrose. lactose, and galactose is added to each to it's own seperate fementation tube. iml of yeast is added to each tube. After 20 minutes the volume of carbondioxide is measured.

Question: Design an appropriate control treatment for these experiments.

What would I be trying to show. Would 20 mls of water in a fermentation tube with 1 mil of yeast be a control?

Solution Preview

Yeast is the organism, which ferments sugars under anaerobic conditions to produce carbon dioxide and alcohol. A control experiment is designed such that it negates the effect of other conditions working ...