Biochem Quiz 6
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What is true about naturally occurring monosaccharides?
D,L do not specify the sign of rotation of plane-polarized light
The intramolecular cyclization reaction of glucose in solution ______.
generates an asymmetric carbon
What specific bond links the monomers of cellulose?
Isomers of monosaccharides that differ only in their configuration about the asymmetric carbon are called _____.
Hydrolysis of lactose will yield _____.
glucose and galactose
The cell wall in Gram-negative bacteria consists of two lipid bilayers with ____ between the two bilayers.
The O-glycosidic linkage commonly occurs through ___ residues.
Amylose has more non-reducing ends than amylopectin.
_____ is the most abundant natural polymer in the world.
Glycosaminoglycans are linear chains of repeating disaccharides in which one unit is an amino sugar and one or both is negatively charged. [T/F]
D-amino acids are often found in...
Name the following molecule.
______ cleave fatty acids or polar head groups from a glycerophospholipid, producing lysophospholipids, phosphodiaclyglycerols or diacylglycerols.
Dihydroxyacetone is an aldotriose. [T/F]
The intramolecular cyclization reaction of glucose in solution generates an asymmetric carbon yielding a cyclic hemiacetal. [T/F]
The anomeric carbon in glucose is found at the ___ position.
An amino sugar has a ____ group at the C-2 position, as in glucosamine.
Anylose and amylopectin of starch are each composed of ____ residues.
Glycogen is similar to amylopectin but also contains galactose residues and is more highly branched. [T/F]
The phosphorylase enzyme releases the carbohydrate on the ___ end.
Which is more heavily branched? Starch of glycogen?
Heparin is a glycosaminoglycans. [T/F]
In what compounds are D-amino acids an important constituent?
N-linked saccharides are attached via the ____ nitrogens of _____ residues.
Biochem Quiz 6
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