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Carbon compounds

Total questions: 18

Worksheet time: 2hrs 30mins

Name
Class
Date
1.

How many valence electrons does each carbon atom have?

a)

2

b)

3

c)

4

d)

1

2.

What gives carbon the ability to form chains of almost unlimited length?

a)

carbon can bond to other carbon

b)

carbon makes covalent bonds

c)

carbon has 6 electrons

d)

carbon has isotopes

3.

Large molecules in living cells are known as ___________.

a)

macromolecules

b)

monomers

c)

atoms

d)

elements

4.

Simple building blocks (or groups of atoms) that attach to other groups to form molecule are called ______________-.

a)

atoms

b)

elements

c)

monomers

d)

polymers

5.

When monomers join together they form ____________.

a)

atoms

b)

elements

c)

monomers

d)

polymers

6.

Which groups below form organic compounds found in living things?

a)

Carbohydrates (sugar)

b)

Lipids (fats)

c)

Proteins (structure)

d)

Nucleic acids (DNA)

7.

What are the three elements found in all organic componds .

a)

carbon

b)

hydrogen

c)

oxygen

d)

nitrogen

e)

phosphorus

8.

In carbohydrates, what is the ratio of Carbon to hydrogen to oxygen.

a)

1:2:1

b)

1: 3

c)

1: 4: 2

9.

Which choices below are examples of carbohydrates.

a)

sugar

b)

meat

c)

starch

d)

fat

10.

What is the main function of carbohydrates in living things.

a)

energy

b)

structure

c)

protection

d)

digestion

11.

Which molecules below are sugars? (monosaccharides)

a)

glucose

b)

glycogen

c)

glycerol

d)

galactose

12.

Many sugars bonded together in chains form polysaccharides.

a)

true

b)

false

13.

Which choices below describe lipids.

a)

fats

b)

oils

c)

waxes

d)

muscle

14.

Monomers of lipids are _____________.

a)

amino acids

b)

fatty acids

c)

neucleotides

d)

simple sugars

15.

Monomers of proteins are _____________.

a)

amino acids

b)

fatty acids

c)

neucleotides

d)

simple sugars

16.

Monomers of neuclic acids are _____________.

a)

amino acids

b)

fatty acids

c)

neucleotides

d)

simple sugars

17.

Examples of neuclic acids are DNA and RNA .

a)

true

b)

flase

18.

Which choices below descibe how proteins play important role in living things.

a)

they build muscle and bones

b)

they help regulate reactions (enzymes)

c)

they transport material to and from cells

d)

they help fight diseases (antibodies)