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Multiple questions on monosaccharides, carbons, and sugars

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Sucrose is hydrolyzed to what two monosaccharides?
1. glucose and fructose
2. glucose and galactose
3. galactose and fructose
4. glucose and maltose

Question 2
All chiral D-sugars rotate plane-polarized light
1. clockwise
2. counterclockwise
3. in a direction that cannot be predicted but must be experimentally determined
4. not at all as they are optically inactive

Question 3
Stereoisomeric aldohexoses that differ in configuration at only a single carbon are
1. epimers
2. meso
3. enantiomers
4. anomers

Question 4
When a monosaccharide reacts to give the pyranose form from its open-chain form, how many distinct pyranose forms are possible?
1. 1
2. 2
3. 2n where "n" is the number of carbons present
4. 4

Question 5
Cellulose and amylose are
1. 1,4' linked polymers of D-glucose which differ in the stereochemistry of this linkage
2. 1, 6' linked polymers of D-glucose which differ in the stereochemistry of this linkage.
3. synonyms of the only polymeric form of D-glucose
4. polymers of totally different monosaccharides

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Solution Summary

Multiple choice questions on various aspects of sugars, monosaccharides, and carbons.

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Question 1: Sucrose is hydrolyzed to what two monosaccharides?
1. glucose and fructose
2. glucose and galactose
3. galactose and fructose
4. glucose and maltose

Response: Sucrose is a disaccharide made up of the two monosacchides glucose and fructose.

Question 2: All chiral D-sugars rotate plane-polarized light
1. clockwise
2. counterclockwise
3. in a direction that cannot be predicted but must be experimentally determined
4. not at all as they are optically inactive

Response: D and L are not the same as d and l. "d" and "l" are designations that are sometimes used to refer to the direction of rotation of the plane of polarization of plane-polarized light. On the other hand, a monosaccharide belongs to the D-series if the hydroxyl group on the chiral carbon farthest from carbon 1 is on the right in a Fischer projection. If the OH on the last chiral carbon is projected on the left, ...

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