posted by bubba .
a student wished to test a sample of organic material to determine whether it was sugar, a dat, or starch. If she could perform only one of the following, which would be the most revealing?
1- test for the presence of carbon and hydrogen in the sample
2- test the sample to determine the amount of amino acid present
3-burn the sample in a calorimeter
4-determine the kinds of chemical bonds present in the molecules of the sample
5- test for the presence of each substance (sugar, starch, and fat) in living organisms