6. Carbohydrates (SUGAR)

Question 1

Sugars are sweet and ______soluble carbohydrates.

Answer 1

water

Question 2

Sugars are formed of C, H, and O in the ratio of ______.

Answer 2

1:2:1 (Hydrates of Carbon)

Question 3

Topic - Monosaccharides

Question 4

*Examples of Monosaccharides (1 Monomeric unit):

Answer 4

a. Pentose(5C): *Ribose (C5H10O5)

b. Hexose(6C) - *Glucose (C6H12O6), Fructose, Galactose

Question 5

Topic - Oligosaccharides

Question 6

Examples of Oligosaccharides (2-9 Monomeric units):

Answer 6

a. Lactose (Glu + Gal)
b. Sucrose (Glu + Fru)
c. Maltose (Glu + Glu)

Question 7

Topic - Polysaccharides (Complex Carb)

Question 8

Polysaccharides are polymers of:

Answer 8

More than 10 Sugars (monosaccharides)

Question 9

In polysaccharides, ______ bond is formed when individual monosaccharides are linked between 2 carbon atoms (C1 to C4) by dehydration.

Answer 9

Glycosidic bond

Question 10

There are complex polysaccharides formed of amino sugars and chemically modified sugars.
Examples.

Answer 10

Glucosamine, N-acetyl galactosamine, etc.

Question 11

Homopolymer/Homopolysaccharides of:
a. Glucose
b. Fructose
c. N-acetyl Glucosamine

Answer 11

a. Glucose - Starch, Cellulose, Glycogen
b. Fructose - Inulin
c. Chitin

Question 12

Chitin is a nitrogen-containing polysaccharide and a derivative of ______, found in ______.

Answer 12

Glucose;
Exoskeleton of Arthropods and fungal cell walls

Question 13

Plant and Algae cell walls are made of ______.

Answer 13

Cellulose

Question 14

Cellulose has no complex helices, and so cannot hold I2.
T/F

Answer 14

True

Question 15

Paper is made from plant pulp, and cotton fiber is cellulosic.
T/F

Answer 15

True

Question 16

Starch is a storehouse of energy in plant tissues and forms ______ structure.

Answer 16

Helical secondary structure

Question 17

Starch holds I2 molecules (Starch-I2) in the helical portion giving ____ color.

Answer 17

Blue color

Question 18

Glycogen is a store house of energy in animal tissues.
T/F

Answer 18

True

Question 19

In a polysaccharide chain of Glycogen:
I. Right end is called
II. Left end is called

Answer 19

I. Reducing end
II. Non-reducing end

Question 20

All sugar is Reducing Sugar except _____.

Answer 20

Sucrose / Invert Sugar (Non-reducing Sugar)