BIO 1140 Lecture Notes - Lecture 4: Chitin, Actin, Liposome
24 Jul 2015
School
Department
Course
Professor
Document Summary
Theory of endosymbiosis: the mitochondrion is thought to have originated from an aerobic prokaryote that lived as an endosymbiont within an anaerobic prokaryote. Objectives: understand and evaluate polarity of molecules, what are the types of chemical bonds relevant to biology, discuss the importance of water in biology, what are the main classes of macromolecules, their structures, and their roles in cell. Important macromolecules in biology: sugar carbohydrates, mono, di or poly-saccharides, fuel source for chemical energy, structural molecules (know them: alpha both oh on same side. Ddud/beta oh on two sides ududu) *exam question: cellular recognition and communication, polysaccharides. From 3 to millions of single sugar units attached together. Recognition: can trigger immune reaction, lipids, small to large hydrophobic molecules, not polymers, 4 main groups, fatty acids and triglycerides, fatty acids. Structure: long chain, amphipathic (a molecule that has a polar and non-polar region) Saturated chain (line up well solid)
