Carbohydrates - PRELIM QUIZ

Question 1

One of the given two simplest carbohydrates.

Answer 1

GLYCERALDEHYDES

Question 2

Sugar synthesized in the mammary glands to make the lactose of milk.

Answer 2

galactose

Question 3

Carbohydrate that contains two to six monosaccharide units linked together.

Answer 3

OLIGOSACCHARIDE

Question 4

Sweetest of all the common sugars, being about twice as sweet as glucose.

Answer 4

Fructose

Question 5

The following are importance of carbohydrates EXCEPT:
A. carbohydrates are non-polar molecules
B. carbohydrates can serve as very effective building materials
C. carbohydrates are mostly water-soluble compounds
D. carbohydrates are very effective energy-yielding nutrients

Answer 5

A. carbohydrates are non-polar molecules

Question 6

Term often called to water-soluble carbohydrates having a characteristically sweet taste like glucose, sucrose and lactose.

Answer 6

SUGARS

Question 7

Carbohydrate that cannot be further hydrolyzed to simple carbohydrate units.

Answer 7

MONOSACCHARIDE

Question 8

Monosaccharide known as dextrose or grape sugar.

Answer 8

glucose

Question 9

Defined as polyhydroxy aldehydes or polyhydroxy ketones or substances that yield these compounds when hydrolyzed.

Answer 9

CARBOHYDRATES

Question 10

The following are OTHER classification of carbohydrates EXCEPT:
a. TRIOSES
b. HEXOSES
c. PENTOSES
d. DIOSES

Answer 10

d. DIOSES

Question 11

The product of xylose reduction.

Answer 11

xylitol

Question 12

Sugar also known as levulose, a ketohexose that occurs in fruit juices, honey, and along with glucose, is a constituent of sucrose.

Answer 12

fructose

Question 13

Most abundant carbohydrate in the blood, it is commonly called blood sugar.

Answer 13

glucose

Question 14

A condition wherein adults doesn’t have the ability to metabolize lactose.

Answer 14

lactose intolerance

Question 15

Sugar commonly known as milk sugar.

Answer 15

lactose

Question 16

It is a component of the disaccharide sucrose, maltose, and lactose and is the monomer of the polysaccharides starch, cellulose, and glycogen.

Answer 16

glucose

Question 17

The product of glucose oxidation.

Answer 17

gluconic acid

Question 18

What is the normal fasting blood sugar?

Answer 18

70-100 mg/100 mL blood

Question 19

The presence of glucose in the urine.

Answer 19

glucosuria

Question 20

The process when body switches to making glucose from amino acids (proteins) because liver glycogen becomes depleted after 10 H.

Answer 20

gluconeogenesis

Question 21

Carbohydrate whose two main components are amylose and amylopectin.

Answer 21

starch

Question 22

Sugar that yields glucose and fructose when metabolized or hydrolyzed by an enzyme/acid

Answer 22

sucrose

Question 23

When does the liver starts to process glycogenolysis?

Answer 23

2-3 hours after meal

Question 24

Part of the plant cell which consists mainly of polysaccharide.

Answer 24

cell wall

Question 25

Carbohydrates composed of two monosaccharide residues united by a glycosidic linkages.

Answer 25

disaccharide

Question 26

The most abundant polysaccharide or organic substance found in nature. It is the chief structural component of plants and wood.

Answer 26

cellulose

Question 27

The organisms which can be seen only using electron microscope.

Answer 27

viruses

Question 28

The following are most abundant inorganic elements found in all living organisms EXCEPT: a. hydrogen b. oxygen c. carbon d. sulfur

Answer 28

d. sulfur

Question 29

A polysaccharide known as the energy-storage carbohydrate of the animal kingdom.

Answer 29

glycogen

Question 30

Sugar that yields galactose and glucose when metabolized or hydrolyzed by an enzyme/acid.

Answer 30

lactose

Question 31

How many chiral carbons does fructose have?

Answer 31

3

Question 32

Monosaccharides that are epimers.

Answer 32

D-glucose and D-galactose

Question 33

Monosaccharide that are anomers. a. α-D-glu & β-L-glu b. α-D-glu & β-D-glu c. α-D-fru & β-L-glu d. α-D-gal & β-D-glu

Answer 33

b. α-D-glucose & β-D-glucose

Question 34

How many chiral carbons does D-arabinose have?

Answer 34

3

Question 35

A Disaccharide linked by β-1,4-glycosidic linkage.

Answer 35

lactose

Question 36

Monosaccharides that are enantiomers.

Answer 36

D-glucose & L-glucose

Question 37

(TRUE or FALSE) Intermolecular rearrangement of the carbohydrate monosaccharide from fisher projection result in a cyclic or ring structure.

Answer 37

FALSE

Question 38

The following are low fiber complex carbohydrates EXCEPT: a. cereals b. lettuce c. banana d. tomato

Answer 38

b. lettuce

Question 39

The following are non-carbohydrate sugars EXCEPT: a. cyclamate b. saccharin c. aspartame d. ribose

Answer 39

d. ribose

Question 40

What principal monosaccharide is used in the formation of milk in the mammary tissue.

Answer 40

galactose

Question 41

During photosynthesis, carbon dioxide and water are converted to glucose and oxygen by

Answer 41

green plants

Question 42

What is the process of breaking down carbohydrates to carbon dioxide and water in the body?

Answer 42

metabolism

Question 43

The following carbohydrates are linked via α-1,4-glycosidic bond EXCEPT: a. amylose b. glycogen c. maltose d. cellulose

Answer 43

d. cellulose

Question 44

Which sugar is NOT a reducing sugar?

Answer 44

sucrose

Question 45

What kind of process is involved in the breakdown of glucose to chemical energy in order for the cells to do work?

Answer 45

oxidation

Question 46

Carbohydrate that gives molecule when it is completely hydrolyzed is known as a

Answer 46

disaccharides

Question 47

a monosaccharide that consists of 5 carbon atoms which is a group of ketone

Answer 47

ketopentose

Question 48

a monosaccharide that contains 4 carbon atoms which is an aldehyde group

Answer 48

aldotetrose

Question 49

Hydrocarbon contains only the elements...

Answer 49

carbon and hydrogen

Question 50

reduction of monosaccharides produces

Answer 50

sugar alcohols

Question 51

In the L-isomer of a Fischer projection of a monosaccharide, the -OH group furthest away from the carbonyl is written...

Answer 51

on the left of the bottom chiral carbon

Question 52

One difference between L-glucose and D-glucose is

Answer 52

only D-glucose is found in disaccharides and polysaccharides

Question 53

Glycosidic bond between the two monosaccharides can be classified as

Answer 53

ether bond

Question 54

In a disaccharide, two monosaccharides are joined by what kind of bond?

Answer 54

glycosidic bond

Question 55

Contains a B-1-4-glycosidic bond

Answer 55

Lactose

Question 56

Maltose is a

Answer 56

disaccharide

Question 57

contains an a-1-6 branches

Answer 57

Glycogen

Question 58

Cellulose is not digestible to humans because it contains units linked by ____-glycodic acid

Answer 58

B-1-4

Question 59

Amylose is a form of starch with

Answer 59

only an a-1-4 link bonds glucose units

Question 60

Humans can't digest cellulose because

Answer 60

humans lack necessary enzymes to digest B-glycosides

Question 61

Aspartame and Saccharin are examples of

Answer 61

noncarbohydrate sweeteners

Question 62

In this disorder an enzyme is missing that is needed to convert galactose to glucose

Answer 62

Galactosemia

Question 63

Under acid hydrolysis conditions, starch is converted to

Answer 63

Glucose

Question 64

Maltose can be classified as a(n)

Answer 64

disaccharide

Question 65

The glucose level in the blood is higher the normal.

Answer 65

Hyperglycemia

Question 66

The glucose level level in the blood is lower the normal.

Answer 66

Hypoglycemia

Question 67

Breakdown of carbohydrates to carbon dioxide and water in body, is called..

Answer 67

Respiration

Question 68

Photosynthesis uses ____ as an energy source

Answer 68

Sunlight

Question 69

Galactose is a product of enzymatic hydrolysis of...

Answer 69

Lactose

Question 70

Conversion between a (alpha) and b (beta) anomers is called

Answer 70

Mutarotation

Question 71

Disaccharide that occurs as a breakdown product of starch

Answer 71

Maltose

Question 72

A carbohydrate that stores energy in the human body

Answer 72

Glycogen

Question 73

A disaccharide consisting of glucose and fructose

Answer 73

Sucrose

Question 74

A disaccharide consisting of 2 glucose molecules

Answer 74

Maltose

Question 75

Unbranched carbohydrate that stores glucose in plants

Answer 75

Amylose

Question 76

Amylopectin

Answer 76

Glucose

Question 77

Lactose

Answer 77

Glucose + Galactose

Question 78

Glycogen

Answer 78

Glucose

Question 79

Maltose

Answer 79

Glucose

Question 80

Sucrose

Answer 80

Glucose + Fructose