Carbohydrates

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1

Cellulose is produced by ______, and it’s major function is _________.

A. Plants; energy storage

B. Animals; as a structural component

C. Animals; energy storage

D. Plants; as a structural component

E. None of the above

D. Plants; as a structural component

2

Which polysaccharide has only B-1,4 glycosidic linkages?

A. Amylose

B. Amylopectin

C. Glycogen

D. Cellulose

E. Starch

D. Cellulose

3
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Classify the molecule shown according to the location of its carbonyl group and the number of carbon atoms.

A. Ketopentose

B. Aldopentose

C. Aldotetrose

D. Aldotriose

E. Ketotriose

B. Aldopentose

4

Fructose can be classified as a (an)

A. Aldoketose

B. Ketohexose

C.aldopentose

D. Ketopentose

E. Aldohexose

B. Ketohexose

5

Starch is produced by,_______ and its major function is, _______.

A. Animals; as a structural component

B. Plants; energy storage

C. Plants; as a structural componenet

D. Animals; energy storage

E. None of the above

B. Plants; energy storage

6

Match the following:

A. Maltose. B. Fructose C. Reducing sugar

D. Glucose E. Galactose

6) a monosaccharide that is sweeter than sucrose and found in honey and fruits.

7) a disaccharide composed of two molecules of glucose.

8) a carbohydrate that can be oxidized to produce an acid molecule or its corresponding anion.

9) a monosaccharide which is a componenet of milk sugar.

10) a monosaccharide that functions as the transport form of carbohydrates in blood.

6) B. Fructose

7) A. Maltose

8) C. Reducing sugar.

9) E. Galactose

10) D. Glucose

7

A glycosidic bond is,

A. A bond formed between an anomeric carbon atom and any -OR group

B. All of the above

C. A bond between any two carbohydrate molecules

D. A bond between anomeric carbon atoms on two separate monosaccharides.

E. None of the above.

A. A bond formed between an anomeric carbon atom and any -OR group

8

Glycogen is produced by ______ and its major function is, ________.

A. Animals; energy storage

B. Plants; energy storage

C. Animals; as a structural componenet

D. Plants; as a structural component

E. None of the above

A. Animals; energy storage

9

The bond connections the two monosaccharides in maltose is a (an) ______ linkage.

A. 1,2 anomeric

B. B-1,4 glycosidic

C. B-1,6 glycosidic

D. a-1,4 glycosidic

E. a-1,6 glycosidic

D. a-1,4 glycosidic

10

Ribose can be classified as a (an)

A. Ketohexose

B. Aldoketose

C. Aldopentose

D. Aldohexose

E. Ketopentose

C. Aldopentose

11

Left and right-handed mirror image molecules are know as

A. Diastereomers

B. Structural isomers

C. Enantiomers

D. Cis-trans isomers

E. Anomers

C. Enantiomers

12

The reaction in which a disaccharide is broken down into its component monosaccharides is,

A. Reduction

B. Oxidation

C. Glycoside formation

D. Enediol formation

E. Hydrolysis

E. Hydrolysis

13
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The molecular formula of the common disaccharides in human biochemistry is,

A.

14

A carbohydrate can be defined as a molecule:

A. Whose name ends in “-ase”

B. That is an aldehyde or ketone and that has more than one hydroxyl group.

C. Composed of amine groups and carboxylic acid groups bonded to a carbon skeleton.

D. Composed of carbon atoms boned to water molecules.

E. Composed mostly of hydrocarbons and soluble in non-polar solvents

B. That is an aldehyde or ketone and that has more than one hydroxyle group.

15

How many stereoisomers of an aldopentose can exist?

A. 2

B. 8

C. 16

D. 4

E. 32

B. 8

16

A sugar present in honey is a 50/50 ratio with glucose is,

A. Monnose

B. Fructose

C. Glucose

D. Maltose

E. Sucrose

B. Fructose