Carbohydrate - Correct Answer Polyhydroxy aldehyde, ketone, or a compound that produces such substances upon hydrolysis
Chiral Centre - Correct Answer -C atom attached to 4 different groups (tetrahedral geometry)
-A molecule with a chiral centre is said to be "chiral
Enantiomers - Correc...
1430 Biochem Midterm 2 Questions With Highest
Ratings (Latest Solutions )
Carbohydrate - Correct Answer Polyhydroxy aldehyde, ketone, or a compound that produces such
substances upon hydrolysis
Chiral Centre - Correct Answer -C atom attached to 4 different groups (tetrahedral geometry)
-A molecule with a chiral centre is said to be "chiral
Enantiomers - Correct Answer -Stereoisomers that are not superimposable mirror images of each other
-The configurations at all chiral centres are exactly opposite
-All chemical and physical properties are the same
-Differ in direction of optical ration of plane polarized light
-Differ in interaction with other chiral molecules (not achrial)
Diastereomers - Correct Answer -Stereoisomers that are not enantiomers of one another (non-
superimposable non-mirror images)
-Different physical properties (are different chemical substances)
Epimers - Correct Answer Diastereomers that differ in configuration at only one centre of chirality
Fisher Projections - Correct Answer -show 3d geometry about each carbon
, Classification of Monosaccharides - Correct Answer -Functional Groups
(Aldose, Ketose)
-# of carbons
(Pentose, hexose)
Examples of monosaccharides - Correct Answer -D-Glucose (blood sugar)
-D-Galactose (brain sugar, milk sugar)
-D-Fructose (sweet, in fruits)
-D-Ribose (RNA)
cyclic forms of monosaccharides - Correct Answer -Intramolecular reaction between carbonyl group
with hydroxyl group to form ring
-Anomeric carbon
-alpha form
-beta form
-L form
-D form
Anomeric carbon - Correct Answer hemiacetal carbon, bound to ring O and OH
α-form - Correct Answer -OH of anomeric carbon is opposite of -CH2OH of C5
β-form - Correct Answer -OH of anomeric carbon is same side of -CH2OH of C5
L-form - Correct Answer -CH2OH down on ring (left on Fischer)
D-form - Correct Answer -CH2OH up on ring (Right on Fischer)
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