BB lecture 9-12 carbohydrates

BB lecture 9-12 carbohydrates - Chapter 5 The structure and...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 5 – The structure and function of macromolecules (aka biomolecules) Learning objectives: List the four major categories of macromolecules Be able to describe each type of macromolecule in terms of: Elemental composition , molecular structure/subunits , and function(s) Distinguish between monomers and polymers Illustrate the difference between condensation rx and hydrolysis rx Additionally, for Carbohydrates… Know the typical functional groups of carbohydrate-type molecules Know examples of monosaccharides, disaccharides, oligosaccharides, and polysaccharides Describe the formation of a glycosidic linkage Distinguish between the glycosidic linkages found in starch and cellulose and explain why the difference is significant
Background image of page 1

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

View Full DocumentRight Arrow Icon
Examples of monosaccharides Triose sugars (C 3 H 6 O 3 ) Pentose sugars (C 5 H 10 O 5 ) Hexose sugars (C 6 H 12 O 6 ) H C OH H C OH H C OH H C OH H C OH H C OH HO C H H C OH H C OH H C OH H C OH HO C H HO C H H C OH H C OH H C OH H C OH H C OH H C OH H C OH H C OH H C OH C O C O H C OH H C OH H C OH HO C H H C OH C O H H H H H H H H H H H H H H C C C C O O O O Aldoses Glyceraldehyde Ribose Glucose Galactose Dihydroxyacetone Ribulose Ketoses Fructose Figure 5.3
Background image of page 2
Monosaccharides May be linear Can form rings H H C OH HO C H H C OH H C OH H C O C H 1 2 3 4 5 6 H OH 4 C 6 CH 2 OH 6 CH 2 OH 5 C H OH C H OH H 2 C 1 C H O H OH 4 C 5 C 3 C H H OH OH H 2 C 1 C O H H CH 2 OH H H OH HO H OH OH H 5 3 2 4 (a) Linear and ring forms. Chemical equilibrium between the linear and ring structures greatly favors the formation of rings. To form the glucose ring, carbon 1 bonds to the oxygen attached to carbon 5. OH 3 O H O O 6 1 Figure 5.4
Background image of page 3

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

View Full DocumentRight Arrow Icon
Image:Glucose Fisher to Haworth.gif - Wikipedia, the free encyclopedia
Background image of page 4
What about Disaccharides? They… Consist of two monosaccharides Are joined by a glycosidic linkage
Background image of page 5

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

View Full DocumentRight Arrow Icon
Examples of disaccharides Dehydration reaction in the synthesis of maltose. The bonding of two glucose units forms maltose. The glycosidic link joins the number 1 carbon of one glucose to the number 4 carbon of the second glucose. Joining the glucose
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 23

BB lecture 9-12 carbohydrates - Chapter 5 The structure and...

This preview shows document pages 1 - 7. Sign up to view the full document.

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