1) What is an \"indicator\" reagent? 2) What \"indicator\" was used in this expe
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1) What is an "indicator" reagent? 2) What "indicator" was used in this experiment? 3) How did this indicator show us the results of the experiment? 4) What hypothesis was tested in this experiment? 5) Two of the four test tubes we incubated were "control" conditions for the experiment. A "control" condition provides results for comparison with the "experimental" conditions that test the hypothesis. A) Which two test tubes were "controls"? B) What did the indicator reagent show us for the two control test tubes? 6) Draw your own "results" table for this experiment (similar to the table drawn for the Carbohydrate Experiment). - Use the same symbols for a positive indicator test (digestion occurred) and a negative indicator test (digestion did not occur) - List the contents of each test tube, not the test tube numbers. Lipid Di 1) State the hypothesis for lipid digestion that was supported by the results of the experiment. 2) Given the indicator reagent used in this experiment does no directly react with triglyceride, fatty acids or glycerol, then why were we able to use successfully this reagent as an indicator? 3) If bile is not a digestive enzyme like lipase, then how can we explain why it is a necessary condition for lipid digestion under our experimental conditions (30 minutes at body temperature)?Explanation / Answer
1). Indicator reagents are the substances that are used to detect the chemical, biological and pathologic processes. The reagents work by changing their physical properties such as color at particular endpoints to indicate the chemical, biological or pathologic change in the sample being studied. The reagents can be precipitants, colorimetric reagents, reducers, oxidizers, and reducers.
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