Posted by bubba on Wednesday, October 7, 2009 at 5:43pm.
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
3burn the sample in a calorimeter
4determine 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

AP BIO  bobpursley, Wednesday, October 7, 2009 at 5:46pm
knowing the kinds of chemical bonds would be most helpful. Sugars, fats, and starches have only covalent bonds.

AP BIO  bubba, Wednesday, October 7, 2009 at 5:53pm
but how would this be revealing if they all have the glycosidic bonds? wouldn't that just be harder to differentiate them?
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