1. Ethanol is a mild toxin to most living organisms and is broken down by the enzyme alcohol dehydrogenase found in the liver. A common mutation found in human results in the inability to produce high quantities of alcohol dehydrogenase. Three liver samples are provided to your lab. Design an experiment you can carry out in the lab to test which of these samples has the highest concentration of alcohol dehydrogenase. Identify your independent, dependent, and control variables.

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Abiogenesis