Free Printable Unit 4-Chemistry of Biology Test Review

1.

Which of the following best defines matter?

a)

Anything that is solid or a liquid

b)

Living things found in the universe

c)

Anything that occupies space and has mass

d)

Nonliving things found on Earth and in space

2.

What is the name of the particle that circles the nucleus of an atom?

a)

Electron

b)

Proton

c)

Neutron

d)

Protein

3.

Which best describes the nucleus of an atom?

a)

It is negatively charged part of the atom

b)

It contains no mass

c)

It is made of neutrons and electrons

d)

It is the most massive part of the atom

4.

Look at the diagram. It shows the common elements found in the human body. The element X is the most abundant element in the body. What is element X?

a)

Oxygen

b)

Barium

c)

Phosphorus

d)

Nitrogen

5.

Which element is present in all the large macromolecules in the human body?

a)

Uranium

b)

Helium

c)

Carbon

d)

Barium

6.

Which two atoms form a covalent bond?

a)

Two oxygen atoms

b)

Two sodium atoms

c)

An iron atom and an oxygen atom

d)

A sodium atom and a chlorine atom

7.

What happens when a sodium atoms loses an electron in its outer energy shell?

a)

It becomes a positive ion

b)

It becomes a negative ion

c)

It has an increase in the number of protons

d)

It has an increase in the number of neutrons

8.

A lithium atom that has lost an electron comes near a chlorine atoms that has gained an electron. What happens?

a)

They form an ionic compound

b)

They form a covalent compound

c)

They form a hydrogen bond

d)

They form a peptide bond

9.

Which molecule most likely has the greatest amount of stored energy in its bonds?

a)

Na-Cl

b)

H-O-H

c)

O=C=O

d)

Fe-O

10.

Which of the following is an example of a chemical change?

a)

Frying an egg

b)

Dissolving salt

c)

Freezing water

d)

Bending metal

11.

Which equation has water as a product in the chemical reaction?

a)

$H_2O\ \rightarrow\ H_2+O_2$

b)

$NaCl\ +\ Cl\ \rightarrow\ NaCl$

c)

$NaOH\ +\ H_{2\ _{ }}\rightarrow\ Na\ +\ H_2O$

d)

$CO_{2\ }+O_{2\ }+\ energy\ \rightarrow\ C_6H_{12}O_{6\ }+\ O_2$

12.

Which would provide the body with the most energy?

a)

Breaking a single carbon bond

b)

Breaking the bonds in a disaccharide

c)

Creating bonds to make a simple sugar

d)

Carrying oxygen from the lungs to the cells

13.

What macromolecule is made up of nucleic acids?

a)

DNA

b)

Fructose

c)

Triglyceride

d)

Protein

14.

Which of the following is an organic molecule?

a)

$C_2H_6$

b)

$H_2SO_4$

c)

$MgF$

d)

$KBr$

15.

What kind of molecule is formed when glucose and fructose are combined?

a)

Cellulose

b)

Disaccharide

c)

Monosaccharide

d)

Polysaccharide

16.

Which should a person eat if he wants the fastest supply of energy?

a)

Lipid

b)

Polysaccharide

c)

Monosaccharide

d)

Disaccharide

17.

What is the main function of starch in plants?

a)

Store energy

b)

Capture sunlight

c)

Produce carbohydrates

d)

Remove wastes

18.

What kind of molecule is shown in the diagram below?

a)

Protein

b)

Trigylceride

c)

Polysaccharide

d)

Nucleotide

19.

How do birds and dogs both use DNA as instructions for building their bodies even though they are very different organisms?

a)

Their DNA has different types of nucleotide bases

b)

Their DNA has the same nucleotide bases, but in different patterns

c)

Their DNA is made of different types of molecules

d)

Their DNA has different lengths

20.

Look at the protein. Which could be its function?

a)

Storing energy

b)

Transporting blood

c)

Moving material out of cells

d)

Forming connective tissue

21.

Look at the diagram. Which best describes the structure labeled X in the diagram?

a)

A fibrous protein is providing support

b)

A large protein is attaching to substrate

c)

A globular protein is folded into different shapes

d)

A membrane protein is transporting substances

22.

The graph shows how two different enzymes react with a substrate as the temperature increases. Based on the results, what conclusion can be drawn about the action of the enzymes as the temperature increases?

a)

Enzyme B stays effective at higher temperatures than enzyme A.

b)

Enzyme B is useful for different reactions than enzyme A.

c)

Enzyme A uses up all the substrate faster than enzyme B.

d)

Enzyme A is a better catalyst at 70°C than enzyme B.

23.

Which force makes it harder to boil water on a stove?

a)

Magnetic pull

b)

Ionic bonds

c)

Hydrogen bonds

d)

Gravitational pull

24.

Look at the word equation below.

glucose + fructose $\rightarrow$ sucrose + water

Which phrase describes the chemical reaction taking place?

a)

Hydrolysis of simple sugars

b)

Hydrolysis of disaccharides

c)

Dehydration of simple sugars

d)

Dehydration of polysaccharides

25.

Why does water roll off the surface of a leaf?

a)

Because the leaf is coated in lipid molecules

b)

Because water is attracted to nonpolar molecules

c)

Because water is a nonpolar molecule

d)

Because plants do not contain cellulose

26.

Which statement describes all types of matter?

a)

It is made of carbon, hydrogen, and oxygen.

b)

It is composed of organic materials.

c)

It is made of proteins and carbohydrates.

d)

It takes up space and has mass.

27.

What is the name of the positively charged particle in the center of an atom?

a)

Electron

b)

Neutron

c)

Nucleus

d)

Proton

28.

Which best describes the nucleus of an atom?

a)

It is the part of the atom with the greatest mass.

b)

It is where all of the particles of the atom are located.

c)

It is the negatively charged part of the atom

d)

It is where the electrons and protons are located.

29.

Look at the diagram. It shows the common elements found in the human body. Elements 1 and 3 are used to make the most common substance in the body. What are these elements?

a)

Oxygen and sulfur

b)

Oxygen an hydrogen

c)

Hydrogen and helium

d)

Nitrogen and phosphorus

30.

After hydrogen and oxygen, which element makes up almost all of the most common substances in your body?

a)

Calcium

b)

Nitrogen

c)

Phosphorus

d)

Carbon

31.

Which two atoms form an ionic bond?

a)

Two oxygen atoms

b)

Two sodium atoms

c)

Sodium and bromine

d)

Fluorine and chlorine

32.

What happens when a magnesium atom loses an electron in its outer energy shell?

a)

It becomes a negative ion

b)

It becomes a positive ion

c)

It has an increase in the number of protons

d)

It has an increase in the number of neutrons

33.

What happens when an atom that has lost an electron comes in contact with an atom that has gained an electron?

a)

They form a covalent bond

b)

They form a water molecule

c)

They form an ionic compound

d)

They form an oxygen molecule

34.

Which chemical bond most likely stores the most energy?

a)

C=C

b)

H-H

c)

C-C

d)

H-O

35.

Which of the following is an example of a chemical change?

a)

Bending metal

b)

Breaking wood

c)

Baking bread

d)

Melting ice

36.

Which equation has water as a reactant in the chemical reaction?

a)

$H_2\ +\ O_{2\ }\rightarrow\ H_2O$

b)

$Na\ +\ Cl\ \rightarrow\ NaCl$

c)

$Na\ +\ H_2O\ \rightarrow\ NaOH\ +\ H_2$

d)

$CO_{2\ }+\ O_{2\ }+energy\ \rightarrow\ C_6H_{12}O_{6\ }+\ O_2$

37.

Which would provide the body with the most energy?

a)

Breaking the bonds in a monosaccharide

b)

Breaking a single carbon bond

c)

Creating bonds to form a carbohydrate

d)

Forming bonds between two amino acids

38.

What macromolecule is made up of nucleic acids?

a)

Protein

b)

Fatty acids

c)

RNA

d)

Sucrose

39.

Which of the following is an organic molecule?

a)

$CH_4$

b)

$H_2O$

c)

$FeO$

d)

$NaCl$

40.

What kind of molecule is formed when many disaccharide molecules are combined?

a)

Starch

b)

Monosaccharide

c)

DNA

d)

Protein

41.

Which should a person eat if she wants the fastest supply of energy?

a)

Glucose

b)

Dissaccharide

c)

Starch

d)

Lipid

42.

What are the main functions of polysaccharides in plants?

a)

Provide water and oxygen

b)

Capture water and sunlight

c)

Provide support and energy

d)

Remove carbon and minerals

43.

In the triglyceride molecule shown below, what are the three molecules attached to the glycerol molecule?

a)

Fatty acids

b)

Nucleic acids

c)

Amino acids

d)

Glycolic acids

44.

Two different species of mosquito have different body structures. Both of these species have DNA that tell their bodies how to grow. How can DNA produce two very different species?

a)

Different organisms have DNA with nucleotide bases in a different order.

b)

Different organisms have DNA that is made of different types of acids.

c)

Different organisms have DNA that is a different total length.

d)

Different organisms have DNA with different nucleotide bases.

45.

Look at the protein. What could be its function?

a)

Storing energy

b)

Insulating the body

c)

Directing the growth of cells

d)

Forming muscle fiber

46.

Look at the diagram. Which best describes the structure labeled X in the diagram?

a)

Fibrous protein

b)

Enzyme protein

c)

Globular protein

d)

Membrane protein

47.

The graph shows how two different enzymes react with a substrate as the temperature increases. Based on the results, what conclusion can be drawn about the action of the enzymes as the temperature increases?

a)

Enzyme A becomes less effective earlier than enzyme B.

b)

Enzyme B is useful for different reactions than enzyme A.

c)

Enzyme A uses up all the substrate faster than enzyme B.

d)

Enzyme A is a better catalyst at $70\degree$ than enzyme B.

48.

Which force of attraction helps move water up through plants?

a)

Hydrogen bonds

b)

Gravitational pull

c)

Covalent bonds

d)

Magnetic pull

49.

Look at the word equation below.

sucrose + water → glucose + fructose

Which phrase describes the chemical reaction taking place?

a)

Hydrolysis of simple sugars

b)

Hydrolysis of disaccharides

c)

Dehydration of simple sugars

d)

Dehydration of polysaccharides

50.

Why does water roll off the surface of a leaf?

a)

Because plants do not contain starch

b)

Because water is a nonpolar molecule

c)

Because the leaf hydrogen bonds with the water

d)

Because the surface of the leaf is nonpolar

Unit 4-Chemistry of Biology Test Review

Total questions: 50

Worksheet time: 25mins

Similar Resources on Wayground