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formula for calculating max # of possible stereoisomers of a molecule
2n where n is # of chiral centers
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does cellulose contain beta 1,4 glycosidic bonds or alpha 1,4 glycosidic bonds
beta 1,4
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what is mutarotation
spontaneous change of configuration about the C1that occurs when monosacharides are exposed to water
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(t/f) fructose is an aldopentose
false, its a ketohexose
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(t/f) the alpha carbon is chiral in all amino acids
false, not in glycine. it has 2 hydrogens
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zwitterion
a species with both (+) and (-) charges
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In what direction will an amino acid with a neutral side chain move during electrophoresis at pH4
1.if the pI is 7
2.if the pI is 3
3.if the pI is 4
- 1.the amino acid will have a net positive charge and move toward the cathode
- 2.amino acid is (-), move to anode
- 3.amino acid is at its isoelectric point, not moving
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(t/f) the buffering capacity of an amino acid is greatest at its isoelectric point
false, its the least at isoelectric point. its greatest at its 2 or more pKas
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what is the net charge of an an acid amino acid at physiological pH
(-)
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what are the 2 primary classifications (tertiary structure) of proteins
fibrous and globular
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conjugated protein?
a protein that derive part of its function from a prosthetic group
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