Carbohydrates

Question 1

Mirror image stereoisomers are called _______

Answer 1

Enenatiomers

Question 2

It is the simplest ketose and it does not have a chiral
carbon?

Answer 2

dihydroxyacetone

Question 3

How many chiral carbons that glyceraldehyde have?

Answer 3

1

Question 4

Number of stereoisomers that the fructose has?

Answer 4

8

Question 5

The only non-reducing sugar among disaccharides

Answer 5

Sucrose

Question 6

Which of the following polysugars is classified as homosugar
and a storage polysaccharide in man and animals?

Answer 6

Glycogen

Question 6

The sugar unit of Lactose

Answer 6

galactose and glucose

Question 6

It is the configuration of the glycosidic linkage of sucrose?

Answer 6

α- (1->2)

Question 7

Polysugar that aims in the formation of normal stools and
helps relieve constipation

Answer 7

Cellulose

Question 8

The only heteropolysaccharides that is non-sulfated is:

Answer 8

Hyaluronic acid

Question 9

Glucose and mannose are epimers at what carbon atom?

Answer 9

Carbon - 2

Question 10

Which simple sugar does starch and glycogen come from?

Answer 10

Glucose

Question 11

Which polysugar is built for rapid glucose storage and is released
when glucose is needed?

Answer 11

glycogen

Question 12

Which of the following is a polysugar/heteropolysaccharide?

Answer 12

dermatan sulfate

Question 13

What are the epimers of glucose?

Answer 13

galactose and mannose

Question 14

This non-reducing sugar has no mutual rotation property

Answer 14

sucrose

Question 15

D-glucoronate and N-acetylglucosamine

Answer 15

hyaluronan

Question 16

This heterosugar is a component of bone cartilage and the cornea

Answer 16

chondroitin sulfate

Question 17

When D-glucose reacts with phenyl hydrazine, a crystalline
compound with a same needle shape is obtained

Answer 17

osazones

Question 17

When glucose gets reduced, it becomes

Answer 17

sorbitol

Question 18

What sugar is abundantly present in honey?

Answer 18

fructose

Question 19

Which of the following is a Fructosan?

Answer 19

inulin

Question 20

sugar that has 6 carbons and ketone group as its
functional group?

Answer 20

fructose

Question 21

Which polysugar is absent in the blood group?

Answer 21

mannose

Question 22

Which of the following is an anticoagulant?

Answer 22

heparin

Question 23

Most ketosis have this ketotriose as their parent compound

Answer 23

Dihydroxyacetone Dihydroxyacetone or DHA is the simplest ketose (ketotriose). It is the parent compound of ketosis

Question 24

A carbon atom to which 4 different groups are attached to is called a _____ carbon.

Answer 24

Chiral A chiral carbon or an asymmetric carbon atom is a carbon atom that is attached to 4 different groups.

Question 25

How many chiral carbons does dihydroxyacetone have?

Answer 25

None

Question 26

If fructose has 3 chiral carbons, how many possible stereoisomers can it have?

Answer 26

8 Formula for stereoisomers is x=2^n x= 2^3 = 2x2x2 = 8

Question 27

Epimers of glucose are:

Answer 27

Galactose and mannose

Question 28

________ is an example of nonose (9 carbons).

Answer 28

Sialic acid

Question 29

Mirror image stereoisomers are called ______

Answer 29

Enenatiomers

Question 30

Which sugar is a ketose and is the sweetest sugar?

Answer 30

Fructose

Question 31

A hemiacetal is produced by cyclization between Carbon 5 and carbon number ____.

Answer 31

1

Question 31

When there is oxidation at the aldehyde and alcohol ends of galactose it becomes?

Answer 31

Mucic acid

Question 32

When glucose gets reduced, it becomes

Answer 32

Sorbitol

Question 33

How many possible stereoisomers can dihydroxyacetone have?

Answer 33

0

Question 34

When starch gets hydrolyzed at its alpha 1,6 glycosidic linkage, it produces this disugar

Answer 34

Isomaltose

Question 35

This desugar is used as an osmotic laxative and also in the management of portal encephalopathy

Answer 35

Lactulose

Question 36

Linkages: Maltose

Answer 36

α 1,4 glycosidic bond

Question 37

Linkages: Isomaltose

Answer 37

α 1,6 glycosidic linkage

Question 38

Linkages: Sucrose

Answer 38

O-α-D-glucopyranosyl-(1,2)-β-D fructofuranoside

Question 39

Linkages: Lactose

Answer 39

O-β-D-galactopyranosyl-(1,4)- β – glucopyranose

Question 40

Linkages: Lactulose

Answer 40

β-(1,4) glycosidic bond

Question 41

This desugar is used as an osmotic laxative and also in the management of portal encephalopathy

Answer 41

Lactulose

Question 41

linkages: Trehalose

Answer 41

O- α -D-glucopyranosyl-(1,1)- α -Dglucopyranoside

Question 42

used as a nutrient, sweetener, fermentative reagen

Answer 42

maltose

Question 43

obtain from sugar cane, beet root, fruits or vegetables

Answer 43

Sucrose

Question 44

- used in infant formulations, medium for peniciliin production, diluent in pharmaceuticals

Answer 44

Lactose

Question 45

Which disugar can’t be reduced because both anomeric carbons are in glycosidic linkage?

Answer 45

Sucrose

Question 46

A beta 1.4 glycosidic linkage is seen in

Answer 46

lactose

Question 47

This homosugar is the storage form of sugar in animals and man and is used to normalize blood sugar levels when needed.

Answer 47

Glycogen

Question 48

Which homosugar is classified as fructosan

Answer 48

Inulin

Question 49

Glycogen and starch is classified as _____________

Answer 49

glucosan

Question 50

Agar is classified as ______

Answer 50

galactosan

Question 51

Which non-sulfated GAG serves as a lubricant and shock absorber in joints?

Answer 51

Hyaluronic acid

Question 52

D-glucoronate + GalNac are both found in this GAG found in cartilage and joints

Answer 52

Chondroitin sulphate

Question 53

The parent aldose sugar from which most aldoses come from:

Answer 53

GLYCERALDEHYDE

Question 54

Mirror image, stereoisomers are called:

Answer 54

ENANTIOMERS

Question 54

How many chiral carbons does the Glyceraldehyde have?

Answer 54

1

Question 55

The number of possible stereoisomers fructose has:

Answer 55

8

Question 56

Which simple sugar is a ketose

Answer 56

fructose

Question 57

The glycosidic bond in lactose is

Answer 57

B-1,4

Question 58

The sugar units in Lactose

Answer 58

GALACTOSE AND GLUCOSE

Question 59

Which poly sugar is a homopolysaccharide

Answer 59

STARCH

Question 60

Which polysaccharides aids in the formation of normal stool and relieves constipation?

Answer 60

CELLULOSE

Question 61

This heteropolysugar is the only non sulfated GAG?

Answer 61

HYALURONIC ACID

Question 62

Glucose and Galactose are epimers at ?

Answer 62

CARBON 4

Question 63

From which simple sugar does starch and glycogen come from?

Answer 63

GLUCOSE

Question 64

Which polysugar is built for rapid glucose storage and is released when glucose is needed?

Answer 64

GLYCOGEN

Question 65

Which only sugar is an example of a GAG?

Answer 65

HEPARIN

Question 66

Epimers of glucose

Answer 66

GALACTOSE AND MANNOSE .

Question 67

This non-reducing sugar has no mutual rotation property

Answer 67

SUCROSE

Question 68

Glucuronic acid and Acetylglucosamine are found in

Answer 68

HYALURONAN

Question 69

This heterosugar is a component of bone cartilage and the cornea

Answer 69

CHONDROITIN SULFATE

Question 70

When the aldehyde group of glucose gets reduced it becomes

Answer 70

SORBITOL

Question 71

When fructose or mannose react with phenyl hydrazine, they form needle-like structures

Answer 71

osazones

Question 72

Which of the following is a fructosan?

Answer 72

INULIN

Question 73

What sugar is abundantly present in honey?

Answer 73

FRUCTOSE

Question 74

. Which of these sugars has 6 carbons and ketone group as its functional group?

Answer 74

FRUCTOSE

Question 75

N-Acetyl Neuramidic Acid (NANA) is

Answer 75

AMINO ACID SUGAR (condensation of amino sugar with Pyruvic Acid or Lactic Acid; NANA is formed from condensation of Pyruvic Acid with N-Acetyl Mannosamine)

Question 76

Which heteroglycan sugar is an anticoagulant?

Answer 76

HEPARIN naturally present in mast cells;

Question 77

Carbon Atom to which 4 different atoms are attached is called:

Answer 77

Chiral or Asymmetric Carbon

Question 78

The simplest carbohydrate that has a chiral carbon.

Answer 78

Glyceraldehyde

Question 79

Mirror Image

Answer 79

Enantiomers

Question 80

Non – superimposable

Answer 80

Diastereoisomers

Question 81

Sugars differing in configuration at only one chiral carbon are called?

Answer 81

Epimers

Question 82

DHA - chiral carbon

Answer 82

None or 0

Question 83

Glyceraldehyde - chiral carbon

Answer 83

1 Chiral Carbon

Question 84

Glucose - chiral carbon

Answer 84

4

Question 85

How many chiral carbons are there in Ribose?

Answer 85

3 Chiral Carbons

Question 86

chiral carbon - . Eyrthrose

Answer 86

2

Question 86

linkages : α,β – 1,2

Answer 86

sucrose

Question 87

linkages : β – 1,4

Answer 87

Cellobiose

Question 88

linkages: α – 1,4

Answer 88

Maltose

Question 89

linkages: α,β – 1,2

Answer 89

Sucrose

Question 90

linkages: Linear Polysaccharide B – 1,4

Answer 90

Cellulose

Question 90

linkages: β – 1,4

Answer 90

Lactose

Question 91

Sugar that has N-Acetyl-beta-D-glucosamine

Answer 91

chitin

Question 92

Has Amylopectin:

Answer 92

Two possible answers: Dextrin or Starch

Question 93

Main storage form of glucose in man and animals?

Answer 93

Glycogen

Question 94

IdoA + GalNAc – 4s – 6s

Answer 94

Dermatan Sulfate

Question 95

Sugar derivatives with antigenic determinants found in blood groups?

Answer 95

Glycoproteins

Question 96

D-glucuronate + GlcNAc

Answer 96

Hyaluronic Acid

Question 97

Iduronic acid + glucosamine

Answer 97

Heparin

Question 98

D-Galactose + GalNAc – 6 – sulfate

Answer 98

Keratan Sulfate

Question 99

Deficient enzyme for Hurler’s syndrome:

Answer 99

𝜶 – L – Iduronidase (GAGS affected are: Dermatan sulfate and Heparan sulfate)

Question 100

Morquio B

Answer 100

B – Galactosidase

Question 101

Sly Syndrome

Answer 101

B – glucoronidase

Question 101

Morquio A

Answer 101

Galactosamine – 6 – sulfate