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BIOCHEMISTRY > Carbohydrates Midterm Exam > Flashcards

Carbohydrates Midterm Exam Flashcards

1
Q

Classify as Reducing or Non Reducing Sugars: Glucose

A

Reducing

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2
Q

Classify as Reducing or Non Reducing Sugars: Lactose

A

Reducing

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3
Q

Classify as Reducing or Non Reducing Sugars: Fructose

A

Non Reducing

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4
Q

Classify as Reducing or Non Reducing Sugars: Sucrose

A

Non Reducing

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5
Q

Which does not belong to the group of monosaccharides

A

diose

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6
Q

Reactions Monosaccharides may undergo

A

Oxidation, Reduction, Fermentation, Esterification

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7
Q

The test to determine the presence of a reducing sugar in a sample

A

Benedict’s Test, Clini Test, Tollen’s Test, Fehling’s Test

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8
Q

Which monosaccharide is otherwise known as glycerose

A

Glyceraldehyde

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9
Q

Which compound is commonly known as dextrose

A

Glucose

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10
Q

Which pair of compounds are entiomers

A

D-Erythrulose, C-Erythrulose

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11
Q

How many compounds are classified as aldose

A

3

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12
Q

How many compounds are classified as ketose

A

4

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13
Q

Which compound is classified as aldohexose

A

D-Glucose

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14
Q

Identify the aldopentose

A

D-Ribose

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15
Q

how many compounds are classified as triose

A

2

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16
Q

Which monosaccharides have three chiral carbon atoms in their structures

A

Ribose, Fructose

17
Q

Which compound has no chiral carbon atom

A

Dihydroxyacetone

18
Q

Which pentose is a component of RNA

A

D-Ribose

19
Q

What is true about glyceraldehyde and duhydroxycetone

A

Both are Isomers

20
Q

Sucrose + H20 ->

A

Glucose + Fructose

21
Q

Glucose + CuO -> NaOH/heat ______ + Cu2O + H2O

A

Gluconic, Glucorunic, Sacaric

22
Q

glucose + [H] ->

A

Sorbitol

23
Q

C6H12O6 + H2O -> yeast _____ + CO2

A

Ethyl/Wine Alcohol

24
Q

The bond linking two monosaccharides together to form a dissacharide is known as

A

Glycosidic Linkage / Bond

25
Q

Disaccharide yielding galactose upon hydrolisis

A

Lactose

26
Q

What disaccharide is formed through a - 1,4 glyosidic linkage

A

Maltose / Lactose

27
Q

What disaccharide does not ferment in the presence of yeast

A

Lactose

28
Q

In sucrose, the a- glucose is linked to B-fructose using what type of glycosidic linkage

A

a - 1,2

29
Q

When β -glucose bonds with α -glucose, α -maltose is produced. The linkage is ?

A

B - 1,4

30
Q

the polysaccharide functions as a blood anticoagulant?

A

Heparin

31
Q

Which is stored in the liver and muscle and turns red upon reaction with water?

A

Glycogen

32
Q

It gives bulk to the feces and prevents constipation

A

Fiber

33
Q

A carbohydrates that may be given intravenously?

A

Dextrose/Glucose

34
Q

Explain why sucrose is a non-reducing sugar?

A

Because there is no available CHO group on ketone group for oxidation

Sucrose is a non-reducing sugar because the two monosaccharide units are held together by a glycosidic linkage between C1 of α-glucose and C2 of β-fructose.

BIOCHEMISTRY (5 decks)

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