Lab: Identifying Nutrients Answers

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Why was a beaker used for heating the solution?

The beaker is the only one that can withstand high temperatures.

The beaker's wide mouth makes it easier to add and remove test tubes without spilling

A beaker fits the whole surface of the hot plate.

The beaker can be more accurately read than a volumetric flask.

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Which possible errors did you include in your response? Check all that apply.

The water should not be pink/purple because water should test negative for protein.

The water should actually have turned blue, because Biuret solution is blue.

Someone may have mislabeled the test tube with water

The water may have been contaminated with a protein.

Check all facts below that you included in your explanation.

The mystery food sample tested positive for lipids using the Sudan red indicator.

Nicole ate salad dressing.

Salad dressing contains fat, a lipid.

Nicole is probably guilty.

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