BIOL130L Study Guide - Final Guide: Biuret Test, Iodine Test, Cuvette

541 views10 pages

Document Summary

C, h, o, n, s, p are most abundant elements. 4 major biological macromolecules: carbs (mono and polysaccharides, proteins, nucleic acids. Glucose-1-phosphate (mono) and sucrose(di) are aromatic structures with no free aldehyde groups, can"t donate electrons to make benedict"s positive. In plants, starch is the storage polysaccharide composed of glucose linked together by glycosidic bonds. Starch is a mixture of polymers, amylose, and amylopectin which reacts with iodine to give the characteristic blue colour: amylose in starch. Glycogen for animals made of glucose, is larger than starch in terms of molecular weight: glycogen is similar to amylopectin in overall structure, but is more highly branched. Starch and glycogen differ in their overall shape and degree of branching in the final polysaccharide structure. Unbranched, helical molecule where glucose units are joined by alpha (1 4) linkages: amylopectin. Straight and branched sections resulting from alpha (1 6) linkages. Gives off reddish-brown color due to multi branched components.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers

Related Documents

Related Questions