BIOL130L Study Guide - Final Guide: Iodine Test, Reducing Sugar, Amylopectin

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When performing an experiment you need to have a control for each experimental variable, and you also have to repeat controls every time you do an experiment. Treatment controls can be positive or negative. Either positive or negative controls are used to check if experimental conditions were set properly. Used to check if the procedure was followed. Controls are needed to prevent uncertainness in explanations of experimental results. Positive control prepared in such a way that it should give a positive result if the conditions were set properly and the procedure was followed. Negative control prepared in such a way that it should give a positive result if the conditions were set properly and the procedure was followed. Time points if time is a variable, you have to have a control for every time point in the experiment. Zero time point control = extremely important. Samples have to be collected and measured immediately after treatment at time zero.

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