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Worksheets

Unit 3 Test

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

Which one of these elements is the main component of organic compounds?

a)

Hydrogen

b)

Oxygen

c)

Nitrogen

d)

Carbon

2.

It is the study of all compounds that contain bonds between carbon atoms.

a)

Inorganic chemistry

b)

Chemistry

c)

Organic chemistry

d)

Carbon chemistry

3.

Which is NOT a property of carbon?

a)

It is polar

b)

It has 4 valence electrons

c)

It forms strong covalent bonds

d)

It can form long chains

4.

These are known as “giant molecules.”

a)

Polymers

b)

Carbohydrates

c)

Macromolecules

d)

Monomers

5.

Term given to the small units in macromolecules.

a)

Polymers

b)

Monomers

c)

Micromolecules

d)

Atoms

6.

Term given to a group of many units joined together.

a)

Polymers

b)

Monomers

c)

Micromolecules

d)

Atoms

7.

These are the four main groups of macromolecules.

a)

Starch, glycogen, cellulose, and lactose

b)

Carbohydrates, lipids, nucleic acids, and proteins

c)

Carbohydrates, lipids, cellulose, and proteins

d)

Starch, glycogen, nucleic acids, and lactose

8.

These are compounds made up of carbon, hydrogen, and oxygen. They are a main source of energy for cells and serve structural purposes for plant cells.

a)

Carbohydrates

b)

Proteins

c)

Lipids

d)

Nucleic acids

9.

Name given to single sugar molecules. a.

a)

Amino acids

b)

Monomers

c)

Monosaccharides

d)

Polysaccharides

10.

Name given to macromolecules formed from monosaccharides.

a)

Starches

b)

Monomers

c)

Polysaccharides

d)

Polymers

11.

These are biological molecules that are not soluble in water.

a)

Carbohydrates

b)

Proteins

c)

Lipids

d)

Nucleic acids

12.

These lipids are joined together by single bonds, examples are lard and butter.

a)

Saturated

b)

Unsaturated

13.

These lipids are joined together by double bonds, examples are oils.

a)

Saturated

b)

Unsaturated

14.

These are biological molecules that contain nitrogen and phosphorus, they store and transmit genetic information.

a)

Carbohydrates

b)

Proteins

c)

Lipids

d)

Nucleic acids

15.

Term given to monomers that form nucleic acids.

a)

Amino acids

b)

Monosaccharides

c)

Nucleoitdes

d)

Fatty acids

16.

Nucleotides consist of 3 parts: a 5-carbon sugar, a nitrogenous base, and what else?

a)

Sulfur group

b)

Phosphate group

c)

Magnesium group

d)

Potassium group

17.

These are biological molecules whose monomers are amino acids.

a)

Carbohydrates

b)

Proteins

c)

Lipids

d)

Nucleic acids

18.

Name given to the portion of each amino acid that is different is a side chain called

a)

A-group

b)

S-group

c)

R-group

d)

P-group

19.

Proteins can have these many levels of organization

a)

2

b)

5

c)

4

d)

1

20.

Van der Waals forces and _______ help maintain proteins shapes

a)

Hydrogen bonds

b)

Ionic bonds

c)

Covalent bonds

d)

Polar bonds