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Biochemistry
chapter 5
20
Other
Graduate
10/04/2012

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Term
Carbohydrate polymers
Definition

structure protective element of cell wall 

lubricate sketal joints between cells

Term
Glyconjugates
Definition
acts as a signal to intracellular location/ metabolic facts of hybrid molecules
Term
carbohydrates
Definition

ketones; yield such compound on hydrolysis empirical formula (CH2O)n

 

Term
what are the three types of monosacchrides?
Definition
  1. oligosaccharides
  2. disaccharides
  3. polysaccharides
Term
what is monosaccharides?
Definition
simple sugars 6 carbon sugar D-glucose
Term
what is the Oligosaccharides?
Definition
short chains has linkage called glycosidic bonds
Term
 what is disaccharides?
Definition

most abundant; two monosaccharides units on sugar D-glucose and D-frutose

Consists of two monosaccharides joined convalently by O- glycosidic bond

Term
what is polysaccharides?
Definition

sugar polymers, more than 20% monosaccharides units

cellulose is linear chained

Term
what is a monsacchride sugar with a carboynl group on the end of a carbon chain?
Definition
Aldose
Term
what is a monosaccharide with a carbonyl group anywhere on the carbon chain besides the end?
Definition
ketose
Term
what is an alternatice name for anomeric carbon?
Definition
hemiacetal carbon atom
Term
what are the two types of anomers?
Definition
  1. hemiacetal 
  2. hemiketal
Term
what is pyranoses ?
Definition

six member ring compound

 

Term
what is furanoses
Definition
a five membered furan
Term
what is the difference between condensation and hydroylsis?
Definition

condensation is removal of water which makes a ring

hydrolysis is putting water back in which breaks a ring

Term
What is homopolysacchrides and heteropolysaccharides?
Definition

homopolysacchrides- single monomeric; is a storage used as fuel

heteropolysaccharides- two/ more different kinds species; is extracellular support for organism of all kingdom

form matrix holding cells together

protection, shapes support to cells

Term
what is Proteoglycan
Definition

macromolecule of cell surface

glycosaminoglycancholn joint covanlently to membrane protein

 

Term
what are two types of glucose polymer (starches)?
Definition
  1. amylose (1->4 linked)
  2. amylopectin (1->6 linked)
Term
what is Dextrans
Definition
bacteria/ yeast polysaccharides
Term
what is glycocalyx
Definition

carbohydrate layer over plasma membrane made of oligossaccharide

  • which are important for cell-cell
  • recognition & adhension
  • blood clotting immune response wound healing
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