Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Unit Test -Chemistry of Life

Total questions: 83

Worksheet time: 49mins

Name
Class
Date
1.

All matter is made of building blocks called _____________.

a)

energy.

b)

atoms.

c)

electrons.

d)

compounds.

2.
The positive particles of an atom are 
a)
electrons 
b)
positrons 
c)
neutrons 
d)
protons 
3.

The central region of an atom where neutrons and protons are present is called _________.

a)

nucleus

b)

electron cloud

c)

core

d)

center

4.
Particles in an atom that are neutral and have no charge are 
a)
negatrons 
b)
electrons 
c)
neutrons 
d)
protons 
5.

An atom with atomic number 6 would have how many electrons ?

a)

6

b)

12

c)

3

d)

cannot be determined

6.

What is the atomic number and name for an element with three protons?

a)

2 - Helium

b)

1 - Hydrogen

c)

3 - Lithium

d)

6 - Carbon

7.
A particle that moves around the nucleus is a(n)...
a)
Proton
b)
Neutron
c)
Electron
d)
Quark
8.
Which of the following is a negatively charged subatomic particle?
a)
Electron
b)
Proton
c)
Neutron
d)
Quark
9.
The particles that are found in the nucleus of an atom are
a)
neutrons and electrons
b)
electrons only
c)
protons and neutrons
d)
protons and electrons
10.
The atomic number of an elements is the total number of which particles in the nucleus?
a)
neutrons
b)
protons
c)
electrons
d)
protons and electrons
11.

Nucleotides consists of a phosphate group, a nitrogenous base, and a _______________.

a)

6 carbon sugar

b)

5 carbon sugar

c)

fatty acids

d)

glycerol

e)

R group

12.

A pure substance that consists entirely of one type of atom

a)

atom

b)

element

c)

molecule

d)

compound

13.

A substance formed by the chemical combination of two or more elements in definite proportions

a)

atom

b)

element

c)

compound

d)

molecule

14.
What kind of bond forms when atoms share electrons?
a)
Chemical bond
b)
Ionic bond
c)
Covalent bond
d)
Electron bond
15.

What kind of bond forms when one kind of atom gives or transfers electrons to another kind of atom?

a)

Chemical bon

b)

Ionic bond

c)

Covalent bond

d)

Electron bond

16.
A solution with a pH of 8.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
17.
A solution with a pH of 3.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
18.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-14
d)
1-20
19.
What does pH measure?
a)
Amount of Oxygen Ions
b)
Amount of Hydrogen/Hydronium Ions
c)
The amount of salt in a solution
d)
The density
20.

Large bodies of water do not quickly fluctuate (change) in temperature. Why?

a)

Water is a solvent.

b)

Water has a high heat capacity.

c)

Water acts as a buffer.

d)

Water is non-polar.

21.
Attractions between water molecules are called
a)
Covalent bonds
b)
Ionic bonds
c)
Polar bonds
d)
Hydrogen bonds
22.
Which property of water will cause water to bead up on glass?
a)
Adhesion
b)
Cohesion
c)
Ability to dissolve substances
d)
High specific heat
23.
A water molecule is a ________ molecule, which has one oxygen that has a __________ charge and two hydrogens that have a ___________ charge.
a)
nonpolar, positive, negative
b)
polar, positive, negative
c)
polar, negative, positive
d)
nonpolar, negative, positive
24.
What word describes when water is attracted to other substances?
a)
cohesion
b)
adhesion
c)
capillary action
d)
surface tension
25.
The attraction that causes water and other liquids to form drops on thin films is called ________________. This is also water’s ability to be attracted to other water molecules.
a)
adhesion
b)
capillary action
c)
cohesion
d)
surface tension
26.

________ is the tendency of molecules of the same kind to stick to one another.

a)

Cohesion

b)

Adhesion

c)

Solution

d)

Polar molecule

27.

Water is a universal solvent because it...

a)

can be found anywhere.

b)

freezes when it gets cold.

c)

floats when frozen.

d)

dissolves most substances.

28.
Most of water's properties occur because it is...
a)
A polar covalent
b)
Made with oxygen
c)
A polar ionic
d)
Makes up 75% of the Earth
29.
What is a substance that is dissolved in another substance? 
a)
solution
b)
solute
c)
solvent
d)
compound
30.
What is a solvent?
a)
The substance that does the dissolving in a solution.
b)
The substance that is being dissolved in a solution.
c)
The mixing of different substances.
d)
The process in which neutral molecules lose or gain electrons
31.

A material composed of two or more elements or compounds that are physically mixed together but not chemically combined

a)

compound

b)

molecule

c)

mixture

32.

A mixture of water and non-dissolved materials

a)

compound

b)

mixture

c)

solution

d)

suspension

33.

Any compound that releases hydrogen ions into solution

a)

Acid

b)

Base

c)

Alkaline

d)

Buffer

34.

Any compound that produces hydroxide (OH) ions in solution.

a)

acid

b)

base

c)

buffer

35.

Weak acids or bases that can react with strong acids or bases to prevent, sharp, sudden changes in pH

a)

Acids

b)

Bases

c)

Alkalines

d)

Buffers

36.
Proteins are polymers formed from 
a)
lipids.
b)
carbohydrates.
c)
amino acids.
d)
nucleic acids.
37.
DNA is a polymer formed from 
a)
fatty acids. 
b)
monosaccharides.
c)
amino acids.
d)
nucleotides.
38.

Living organisms use which macromolecule to store and transmit genetic information?

a)

Fat

b)

Protein

c)

Sugar

d)

Nucleic acid

39.
Which is a Carbohydrate's monomer?
a)
fatty acids
b)
Amino acids
c)
Monosacharide
d)
Nucleotide
40.

Which two organic compounds have only Carbon, Hydrogen, and Oxygen?

a)

Carbohydrates/Nucleic Acids

b)

Lipids/Carbohydrates

c)

Proteins/Nucleic Acids

d)

Carbohydrates/Proteins

41.

Organic molecules that always contain carbon, oxygen and hydrogen, often in a 1:2:1 ratio

a)

carbohydrates

b)

proteins

c)

nucleic acids

d)

lipids

42.

What is the primary function of carbohydrates in your body?

a)

Speed up chemical reactions.

b)

Source of immediate energy.

c)

Help to store energy.

d)

Build cell walls in plants.

43.
A type of biological molecule that includes fats, oils, hormones, waxes, and components of cellular membranes ...
a)
lipids
b)
proteins
c)
carbohydrates
d)
nucleic acids
44.
Which polymer group is used as STORED energy?
a)
carbohydrate
b)
lipid
c)
protein
d)
amino acid
45.
Which biomolecule helps form muscles?
a)
Nucleic Acid
b)
Carbohydrate
c)
Protein
d)
Lipids
46.

Macromolecules are made up of smaller subunits called ____ to form ____.

a)

polymers, monomers

b)

monomers, polymers

47.
Enzymes speed up chemical reactions by
a)
making more product
b)
speeding up the reaction
c)
lowering activation energy
d)
moving quickly
48.

The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?

a)

Enzymes increase the energy of the reactants.

b)

Enzymes decrease the energy level of the products.

c)

Enzyme decrease the activation energy of the reaction.

d)

Enzymes reverse the direction of the reaction.

49.

Any element or compound that is acted upon by an enzyme is called a(n)?

a)

Coenzyme

b)

Substrate

c)

Vitamin

d)

Polypeptide

50.

In the diagram, what is letter A?

a)

product

b)

substrate

c)

enzyme-substrate complex

d)

active site

51.
Enzymes are...
a)
nucleic acids
b)
proteins
c)
lipids
d)
carbohydrates
52.
An enzyme speeds up a chemical reaction in the cell but can only be used once.  True or False? 
a)
true
b)
false
53.
What is the function of an enzyme?
a)
enzymes break themselves into small pieces
b)
enzymes slow down chemical reactions
c)
enzymes speed up chemical reactions
d)
enzymes combine products to form reactants 
54.

What happens when enzymes are heated to a high temperature?

a)

The enzymes work faster.

b)

The shapes of the enzyme are destroyed and denatured.

c)

The enzymes' amino acid sequence changes.

d)

The enzymes remain the same.

55.
Which of these is NOT true?
a)
Enzymes can denature (change shape) when the temperature gets too high.
b)
Enzymes can only be used once in a chemical reaction. 
c)
Extreme pH can denature enzymes.
d)
Enzymes speed up chemical reactions. 
56.
Which of these is most likely an enzyme?  
a)
Sucrose
b)
Galactose
c)
Fructose
d)
Amylase
57.
Which is NOT true?
a)
Enzymes speed up chemical reactions.
b)
Enzymes react best at a specific temperature.
c)
Enzymes only control ONE type of reaction.
d)
Enzymes are made of fatty acids.
58.
What is another name for enzymes?
a)
chemical catalysts
b)
microorganisms
c)
biological catalysts
d)
inorganic catalysts
59.

Letter D is called __________.

a)

active site

b)

enzyme

c)

substrate

d)

products

60.

Letter B is called __________.

a)

active site

b)

enzyme

c)

substrate

d)

products

61.

Letter C is called ____________.

a)

active site

b)

enzymes

c)

substrate

d)

products

62.

Letter E is ______________.

a)

active site

b)

enzyme

c)

substrate

d)

products

63.

Li

a)

Lead

b)

Lithium

c)

Litium

d)

Litterium

e)

This is not an element

64.

P

a)

Phosphor

b)

Phosphorous

c)

Prosperous

d)

Phosforous

e)

Phosphorus

65.

F

a)

Florine

b)

Flourine

c)

fluorine

d)

Fluorine

e)

Floorine

66.

Be

a)

Beryllium

b)

Beerium

c)

Beryllum

d)

Berylium

e)

Berylum

67.

Chlorine

a)

CL

b)

C

c)

cl

d)

cL

e)

Cl

68.

Sodium

a)

S

b)

So

c)

Sd

d)

Si

e)

Na

69.

Potassium

a)

P

b)

Po

c)

Pt

d)

Ps

e)

K

70.

Nitrogen

a)

Ni

b)

Nt

c)

N

d)

Nr

e)

Ng

71.
This polysaccharide is important to the structure of plant cell walls, 
a)
Starch
b)
Glycogen
c)
Cellulose
d)
Chitin
72.
Which type of carbohydrate is this?
a)
monosaccharide
b)
disaccharide
c)
polysaccharide
d)
glyceride
73.
Which type of carbohydrate is this?
a)
monsaccharide
b)
disaccharide
c)
polysaccharide
d)
glyceride
74.
The 4 macromolecules are
a)
vitamins, lipids, water, micronutrients
b)
micronutrients, macronutrients, water, vitamins
c)
Lipids, Waxes, Vitamin A, Water
d)
Carbohydrates, Lipids, Proteins, Nucleic Acids
75.
What element must be present for a molecule to be considered organic?
a)
nitrogen
b)
water
c)
hydrogen
d)
carbon
76.
A monosaccharide is a
a)
carbohydrate
b)
lipid
c)
nucleic acid
d)
protein
77.
Animals store glucose in the form of
a)
cellulose
b)
glycogen
c)
starch
d)
chitin
78.
What type of carbohydrate is this?
a)
polysaccharide
b)
disaccharide
c)
monosaccharide
d)
it isn't a carbohydrate
79.
Sucrose is made up of 
a)
glucose + fructose
b)
glucose + glucose
c)
glucose + ribose
d)
glucose + galactose
80.

Composed of mostly protons and neutrons in the nucleus. – Also called Mass Number

a)

Atomic Mass

b)

Atomic Number

c)

Neutrons

d)

Isotopes

81.

Atoms of the same element with a different number of neutrons are called___________.

a)

ions

b)

electrons

c)

isotope

d)

protons

82.

A charged atom is called _____________.

a)

Ion

b)

Isotope

c)

nucleus

d)

Neutron

83.
How many neutrons in C-14?
a)
6
b)
7
c)
14
d)
8

Similar Resources on Wayground

Patterns of Inheritance Review

79 questions

Patterns of Inheritance Review

quiz

Worksheet

•

9th - 12th Grade

Semester One Review

81 questions

Semester One Review

quiz

Worksheet

•

9th - 12th Grade

The Chemistry of Life

85 questions

The Chemistry of Life

quiz

Worksheet

•

9th - 12th Grade

Biology

80 questions

Biology

quiz

Worksheet

•

6th - 9th Grade

Unit 2 Reteach Matheson

85 questions

Unit 2 Reteach Matheson

quiz

Worksheet

•

9th Grade

Classwork on asexual reproduction

80 questions

Classwork on asexual reproduction

quiz

Worksheet

•

10th Grade

Biology Fall Final Exam Review

80 questions

Biology Fall Final Exam Review

quiz

Worksheet

•

9th Grade

Pre-AP Bio Unit 1: Ecology

78 questions

Pre-AP Bio Unit 1: Ecology

quiz

Worksheet

•

9th Grade