1. Benedict’s solution is the testing reagent for monosaccharides in experiment 1. Why were you instructed to heat the Benedict’s solution by itself in test tube 1?

Test tube 1 would serve as a negative control for the experiment.

Explanation:

Heating of Benedict’s solution in the presence of monosaccharides would change the color. However, when it has no monosaccharides present, the color will stay the same. So, in any experiment where you want to test the presence of monosaccharides (reducing sugars), you are supposed to heat the Benedict’s solution alone too so that you know that there was no contamination in the solution itself and then you can compare the results of test samples.

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.

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