Mac 7: P

Question 1

Fill in the blanks

What are the 2 classifications of polysaccharides? ___ & ___

Answer 1

• Homopolysaccharides and

- Heteropolysaccharides.

Question 2

Which of the following is used to test for the presence of reducing sugars?

• Molisch Test
• Benedict’s Test
• Trommer’s Test
• Acelorin Test

Answer 2

-Benedict’s Test

Question 3

Amylopectin is a product of hydrolysis. What color will it produce from its interaction with iodine?

• Blue-Green
• Faint Red
• Colorless
• Dark-Blue

Answer 3

-Faint Red

Question 4

What are the 2 amylase fractions of starch that are hydolyzed from the non-reducing end by cleaving the a-(1-4) linkages of the molecule?

• Glucose and Maltose
• Glucose and Fructose
• Maltose and Fructose
• Maltose and Maltose

Answer 4

-Glucose and Maltose

Question 5

Glycogen is a product of hydrolysis. What color will it produce from its interaction with iodine?

• Blue-Green
• Faint Red
• Colorless
• Dark-Blue

Answer 5

-Faint Red

Question 6

Which of the following is used to test for the presence of reducing sugars?

• Barfoed’s Test
• Fehling’s Test
• Tollen’s Test
• Molisch’s Test

Answer 6

-Fehling’s Test

Question 7

Which of the following is used to test for the presence of carbohydrates?

• Solubility Test
• Molisch’s Test
• Fehling’s Test
• Barfoed’s Test

Answer 7

-Molisch’s Test

Question 8

Erythrodextrin is a product of hydrolysis. What color will it produce from its interaction with iodine?

• Black
• Blue
• Green
• Red

Answer 8

-Red

Question 9

Iodine test is used to detect starch. The test is based on the absorptive properties possessed by large polysaccharide molecules. What color is the positive result?

• Blue-Green
• Faint Red
• Colorless
• Dark-Blue

Answer 9

-Dark-Blue

Question 10

Achrodextrin is a product of hydrolysis. What color will it produce from its interaction with iodine?

• Purple
• Faint Red
• Colorless
• Dark-Blue

Answer 10

-Colorless

Question 11

Disaccharides are those that contain two saccharide units, and on hydrolysis they yield two molecules of monosaccharides.
What are the monosaccharides that make up sucrose?

• Glucose and Maltose
• Glucose and Fructose
• Maltose and Fructose
• Maltose and Maltose

Answer 11

-Glucose and Fructose

Question 12

Amylodextrin is a product of hydrolysis. What color will it produce from its interaction with iodine?

• Purple
• Faint Red
• Colorless
• Dark-Blue

Answer 12

-Purple

Question 13

Fehling’s test is a sensitive test for reducing sugars. Which of the following will NOT test positive?

• Glucose
• Fructose
• Sucrose

Answer 13

-Sucrose

Question 14

In a Fehling’s Test, What is the indicator the sample tested positive?

• Dark-Blue Precipitate
• Brick Red Precipitate
• Blue-Green Precipitate
• Formation of Purple Ring

Answer 14

-Brick Red Precipitate

Question 15

In a Seliwanoff’s Test, What is the indicator the sample tested positive?

• Blue Solution
• Silver Mirror
• Purple Ring
• Red Solution

Answer 15

-Red Solution

Question 16

Disaccharides are those that contain two saccharide units, and on hydrolysis they yield two molecules of monosaccharides.
What are the monosaccharides that make up maltose?

• Glucose and Glucose
• Glucose and Fructose
• Maltose and Fructose
• Maltose and Maltose

Answer 16

-Glucose and Glucose

Question 17

Disaccharides are those that contain two saccharide units, and on hydrolysis they yield two molecules of monosaccharides.
What are the monosaccharides that make up lactose?

• Glucose and Maltose
• Glucose and Galactose
• Maltose and Fructose
• Maltose and Maltose

Answer 17

-Glucose and Galactose

Question 18

Starch is a product of hydrolysis. What color will it produce from its interaction with iodine?

• Purple
• Faint Red
• Colorless
• Blue

Answer 18

-Blue