BIOL130L Study Guide - Final Guide: Plasmolysis, Metaphase, Spermatogonium
3 Oct 2013
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Time points; if time is a variable, there must be a control for every time point in the experiment. Starch, glycogen, cellulose (all complex carbohydrates: starch. Composed of glucose monomers linked by glycosidic bonds. Glucose units joined by (1 4) linkages. Reacts with iodine to give blue colour (iodine test) Glucose units joined by (1 6) linkages. Similar to amylopectin but is more highly branched. Multibranched components give red-brown colour (iodine test: cellulose. Reducing sugars, simple sugars (all basic carbohydrates: straight chain form. Have an aldehyde group, making them aldose sugars. Aldehyde groups react to benedict"s test and develops a coloured precipitate when boiled: ring form. Made of peptide chains: peptide chains. Consist of amino acids connected by peptide bonds. React with cu++ and alkali to produce a purple colour (biuret test) Add a drop of iodine to a sample. Detects the presence of starch and glycogen: starch. Blue-black caused by reaction between amylose and iodine.
