BIOL130L Lecture Notes - Lecture 1: Semiconservative Replication, Anthocyanin, Abscissa And Ordinate
29 Dec 2016
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Document Summary
Treatment controls: are specific samples that are used to check if the experimental results were done properly. Most abundant elections c, h, o, s, and p form molecules of biological systems. Four major biological macromolecules are: carbohydrates, lipids, proteins, nucleic acids. Iodine test for starch and glycogen: iodine turns blue-black in presence of starch and a reddish-brown in presence of glycogen, plants and animals can store glucose in high molecular weight compounds. Amylose is unbranched and helical, and glucose is connected by alpha 1-4 linkages. The amylose in starch reacts with iodine. Amylopectin has straight and branched sections connected by alpha 1-6 linkages. Glycogen is similar to amylopectin but is much more branched. Glucan is a cellulose-like polysaccharide and is present in the yeast cell walls. Glycogen, proteins, and nucleic acids are present in the cytoplasm. Polysaccharides, such as starch and glycogen, are soluble in tca (trichloroacetic acid) and will remain in solution.
