Chapter 7 Vocab


A homopolysaccharide of glucose; it is ihighly branched and found exclusively in animal cells


glycogen


Formed by cyclization of a ketose sugar


hemiketal


A homopolysaccharide of glucose units connected by (a1-->4) glycosidic bonds; found exclusively in plants


starch


Simple sugars


monosaccharides


Heteropolysaccharides such as hyaluronate


glycosaminoglycans


Glycogen and cellulose, with thousands of simple sugar subunits are examples


polysaccharides


Oxidation of the carbonyl carbon of sugars (except glucose) results in the formation of ______ acids


aldonic


A compound with an asymmetrical atom allowing formation of mirror-image isomers has one or more _____ centers


chiral


B-D-glucuronate is an example of a ________ acid


uronic


End of a polysaccharide chain that is not involved in a glycosidic bond and has a free anomeric carbon


reducing


Lactose and surcrose are examples


disaccharides


Polysaccharides cross-linked by peptides; found in bacterial cell walls


peptidoglycans


A ____ polysaccharide is a polymer of repeating monosacharides


homo


A sugar with a carbonyl group at C-2 (or any position other than C-1)


ketose


Catbohydrate moities are attached to glycoproteins through either N- or
__ - ________ bonds


O - glycosidic


Six-membered ring form of sugars


pyranose


Five-membered ring form of sugars


furanose


A poolysaccharide containing more than one type of sugar is a _____ polysaccharide


hetero


Process that interconverts isomers of pyranoses


mutarotation


Lectins are proteins that bind to specific _________


oligosaccharides


Glycoconjugates containing protein and oligosaccharide portions: for example, glycophorin A.


glycoproteins


A homopolysaccharide of glycose units connected by (B1-->4) glycosidic bonds; it is found exclusively in plants.


Cellulose


An isomer that differs at only one of two or ore chiral centers.


epimer


Gangliosides, for example.


glycolipid


The a and B forms of a pyranose, for example.


anomers


In the formation of pyranoses, linkage between the aldehyde on C-1 and the alcohol on C-5.


hemiacetal


A sugar with the carbonyl group at C-1.


aldose


Animal tissues have an extracellular ______ composed of glycoconjugates and fibrous proteins.


matrix