Experiment 7

Question 1

Yield one kind of monosaccharide upon hydrolysis

Answer 1

Homopolysaccharides

Question 2

Yields mixtures of monosaccharides and derived products

Answer 2

Heteropolysaccharide

Question 3

It is found abundantly in plant kingdom, it is also important constituent of human diet

Answer 3

Starch

Question 4

Starch granule is made up of ___ amylose (300 glucose units in unbranched chain)

Answer 4

98%

Question 5

What are the two molecules of starch

Answer 5

Amylose, amylopectin

Question 6

Cornstarch is composed of ___ amylose, while waxy corn is more than ____ amylopectin

Answer 6

85%, 99%

Question 7

____ is the single glucose molecule have a bond between the one carbon in the ring and four carbon in the ring they are joined by an _____

Answer 7

Amylose, oxygen

Question 8

Is another component of starch and it also consist entirely of repeating change of glucose it is different from amylose because it has two different types of linkages between the glucose subunits

Answer 8

Amylopectin

Question 9

Is found in the bulb of onions and garlic, it is white, odorless, tasteless powder, soluble in hot water, slightly soluble in cold water and insoluble in 60% alcohol

Answer 9

Inulin

Question 10

It is optically active and yields fructose upon hydrolysis

Answer 10

Inulin

Question 11

Is an animal starch found mostly in liver a storage material in muscle a source of energy

Answer 11

Glycogen

Question 12

What is the result of iodine test in starch

Answer 12

Blue to black

Question 13

What is the result of iodine test in inulin agar powder and cellulose

Answer 13

They have yellow to reddish brown color

Question 14

What do you call the crystals found in phenylhydrazine test in starch

Answer 14

Glucosazone or maltosazone crystal

Question 15

What do you call the crystal found in phenylhydrazine test in inulin

Answer 15

Fructosazone crystals

Question 16

What do you call the crystal found in phenylhydrazine test of amyloid

Answer 16

Glucosazone crystals

Question 17

What do you call the crystal found in the phenylhdrazine test of agar-agar

Answer 17

Galactosazone crystals

Question 18

The most abundant organic compound making up around 50% or more of the carbon vegetation

Answer 18

Cellulose

Question 19

On hydrolysis cellulose yields

Answer 19

Glucose

Question 20

The repeating unit of cellulose

Answer 20

Cellobiose

Question 21

Group of carbohydrates which differs from cellulose in that they are hydrolyzed upon boiling with mineral acids

Answer 21

Hemicellulose

Question 22

The product of hydrolysis of hemicellulose are

Answer 22

Pantoses and hexoses

Question 23

What is the color of hydrolysis of starch

Answer 23

Blue to black

Question 24

What is the color of hydrolysis of amylodextrin

Answer 24

Purple

Question 25

The color of hydrolysis of erythrodextrin

Answer 25

Red

Question 26

Color of hydrolysis of achrodextrin

Answer 26

Colorless are same color as iodine solution

Question 27

The color of hydrolysis of glycolgen and amylopectin

Answer 27

Reddish brown or brownish