09-5 carbohydrates

09-5 carbohydrates - Macromolecules Large molecules of...

Info iconThis preview shows pages 1–10. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Macromolecules Large molecules of polymerized subunits: Proteins or polypeptides: amino acid subunits Polysaccharides: sugar subunits Nucleic acids: nucleotide subunits RNA: ribonucleotide subunits DNA: deoxyribonucleotide subunits Carbohydrates Monomers are monosaccharides single sugars Aldose or ketose sugars defined by location of carbonyl group Trioses, pentoses, hexoses, etc. (# of carbon atoms) Ribose, deoxyribose, ribulose pentoses -glucose, galactose, -glucose, fructose hexoses Fig. 5.3a glucose Fig. 5.1 Carbohydrates Polymerize through condensation reactions into polysaccharides Covalent (strong electron-sharing) glycosidic bonds Maltose, lactose, sucrose disaccharides Starches, glycogen, cellulose are important Fig. 5.4a Polysaccharides: Branched and Unbranched Starch and Glycogen: Storage Polysaccharides Plants store sugars as starch, which is made of many -glucose monomers joined by -1,4- glycosidic linkages. This causes the monomer chain to form a helix. Animals store sugars as glycogen. Starch can be branched (amylose) or unbranched (amylopectin). Glycogen is highly branched. Branching occurs when glycosidic linkages form between carbon 1 of a glucose monomer on one strand and carbon 6 of a glucose monomer on another strand. Polysaccharides: Branched and Unbranched Polysaccharides: Branched and Unbranched Polysaccharides: Branched and Unbranched Structural Polysaccharides: Cellulose, Chitin, Peptidoglycan Cellulose: A polymer of -glucose monomers linked by -1,4-glycosidic linkages. (Component of plant cell walls) Chitin: A polymer of N-acetylglucosamine monomers linked by -1,4-glycosidic linkages. (Component of cell walls of fungi and algae, and insect and crustacean...
View Full Document

This note was uploaded on 04/05/2012 for the course HLTH 311 taught by Professor Anderson during the Spring '12 term at BYU.

Page1 / 24

09-5 carbohydrates - Macromolecules Large molecules of...

This preview shows document pages 1 - 10. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online