BIOL130L Study Guide - Cell Plate, Spermatid, Gametogenesis
19 Feb 2013
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Document Summary
Use different tests to check for the existence of macromolecules in various substances. Iodine test checks for starch and/or glycogen: benedict"s test checks for reducing sugars, biuret test checks for protein. The most abundant elements in living material are: carbon, hydrogen, oxygen, nitrogen, sulfur, phosphorus. There are 4 major types of biological macromolecules: carbohydrates. Polysaccharides (i. e. starch, glycogen: proteins, nucleic acids. It is a polysaccharide used by plants to store glucose. It is a mixture of 2 different polymers: amylose and amylopectin. The glucose is joined by alpha 1 -> 4 linkages. The glucose is joined by alpha 1 -> 6 linkages. It is a polysaccharide used by animals to store glucose. Glucose is held together with glycosidic bonds. It turns blue-black in the presence of starch because of the amylose. It turns red-brown in the presence of glycogen because of the multi-branched components. All sugars can exist as straight chains or in ring form.
