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Water and Carbohydrates

Total questions: 10

Worksheet time: 4mins

Name
Class
Date
1.

Water molecules are polar, with the ___

a)

oxygen and hydrogen sides being slightly negative.

b)

oxygen and hydrogen sides being slightly positive.

c)

oxygen side being slightly positive and the hydrogen side being slightly negative.

d)

oxygen side being slightly negative and the hydrogen side being slightly positive

2.

Which of the following is TRUE about water?

a)

A

b)

B

c)

C

d)

D

3.

The density of water is highest at 4ºC. What is the effect of this property of water?

a)

Water can act as a good solvent.

b)

Water can function as lubricant.

c)

Water provides cooling effect on animals.

d)

Water can function as an insulating layer.

4.

All the sugars given are hexoses EXCEPT

a)

glucose

b)

sucrose

c)

fructose

d)

galactose

5.

A polysaccharide is ______

a)

polymer

b)

proteins

c)

inorganic molecule

d)

fat

6.

Maltose consist of _____

a)

glucose + glucose

b)

glucose + fructose

c)

glucose + galactose

d)

glucose + lactose

7.

Which of the following are disaccharides? (More than one answer.)

a)

Lactose

b)

Sucrose

c)

Galactose

d)

Maltose

8.

Which is the monomer of cellulose?

a)

beta-glucose

b)

alpha-glucose

c)

galactose

d)

fructose

9.

A ________ molecule is lost/removed through condensation.

a)

carbon dioxide

b)

water

c)

oxygen

d)

hydrogen

10.

Which statement is TRUE about hydrolysis?

a)

A chemical process to join 2 molecules and produce a larger, more complex molecule,

b)

A large molecule is split into smaller and simpler molecules.

c)

Involves removal of water.

d)

Adding H atom to one section and O atom to the other section.