BIOL130L Study Guide - Final Guide: Biuret Test, Iodine Test, Paper Chromatography
Document Summary
Each variable in an experiment needs a control. Treatment controls: samples which are used to check is the experiment was set up properly. Positive control: sample which should positive result if setup and lab is done properly. Negative control: sample which should negative result if set up and lab is done properly. If time is a variable in the experiment, there must be controls for every time point. Zero time point is important - samples must be collected and measured immediately at time zero. Body is made up of mostly carbon, oxygen, nitrogen, hydrogen, sulfur, and phosphorus. 4 major type of biological macromolecules: carbohydrates (mono and polysaccharides), Usually pale yellow, turns blue-black in presence of starch and red-brown in presence of glycogen. Plants store glucose as starch, which is composed of amylose and amylopectin. Amylose is unbranched alpha glucose connected by 1-4 glycosidic bonds and forms a helical structure.