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Chemistry in Biology Unit Review Quizizz

Total questions: 119

Worksheet time: 3570secs

Name
Class
Date
1.
an organic compound is a compound that contains________
a)
carbon
b)
hydrogen
c)
oxygen
d)
sodium
2.
A bond that is formed when electrons are shared.
a)
Carbon-14
b)
Covalent
c)
Ionic
d)
James
3.

Which of the following subatomic particles are found in the nucleus?

a)

protons

b)

neutrons

c)

electrons

d)

atoms

4.

Made of one kind of atom

a)

element

b)

compound

c)

product

5.

The end result of a chemical reaction

a)

reactants

b)

electrons

c)

atomic mass

d)

products

6.

Formed when two or more elements are joined chemically

a)

element

b)

proton

c)

compound

d)

electron

7.

What subatomic particle is found in the space surrounding the nucleus of an atom?

a)

protons

b)

electrons

c)

neutrons

8.

Which subatomic particle has a negative charge?

a)

protons

b)

neutrons

c)

electrons

9.

Which subatomic particle has a neutral/no charge?

a)

protons

b)

neutrons

c)

electrons

10.

Which subatomic particle has a positive charge?

a)

protons

b)

neutrons

c)

electrons

11.

Atoms are made up of

a)

neutrons, protons, and electrons

b)

pretons, newtons and eletrons

c)

none

12.

Is the center of the atom where the neutrons and protons are located

a)

protons

b)

neutrons

c)

nucleus

13.

Living things are composed mainly of three elements

a)

carbon, hydrogen, and oxygen

b)

carbon dioxide,

c)

only oxygen

d)

none of the above

14.

True or False: Water (H2O) is an example of a chemical compound.

a)

True

b)

False

15.

Covalent bonds form when

a)

atoms share electrons

b)

atoms transfer electrons

c)

atoms share protons

d)

atoms transfer protons

16.

Ionic bonds form when

a)

atoms share electrons

b)

atoms lose protons

c)

atoms lose or gain electrons

d)

atoms gain protons

17.

Covalent bonds ____________ electrons and ionic bonds ____________ electrons

a)
  1. share 2. donate/ receive
b)
  1. donate/ receive 2. share
18.

An endothermic reaction ____________ energy in the form of heat

a)

releases

b)

absorbs

19.

The energy needed to start a reaction is called ......

a)

first energy

b)

substitution energy

c)

activation energy

d)

start energy

20.

Polar molecules are

a)

cold molecules

b)

shared equally

c)

not shared equally

d)

have the same degree of attraction

21.

Which of the following statements about water is false?

a)

Oxygen has a stronger attraction to electrons then hydrogen.

b)

Hydrogen has a slightly positive charge

c)

Oxygen has a slightly positive charge

d)

Water is an example of a polar covalent bond

22.

Non-polar covalent bonds share electrons equally.

a)

True

b)

False

23.

Which is not a kind of bond?

a)

Ionic

b)

Covalent

c)

Hydrogen

d)

Polar

24.

A _____________ has two or more atoms bonded together.

a)

compound

b)

molecule

c)

element

d)

ion

25.

A ________________ has two or more elements bonded together.

a)

compound

b)

molecule

c)

element

d)

ion

26.

Which of these is not considered to be a biomolecule?

a)

protein

b)

carbohydrate

c)

salt

d)

lipid

27.

If the activation energy is to be lowered, a(n) _________________ can be used.

a)

isotope

b)

carbohydrate

c)

catalyst

d)

catalase

28.

An enzyme speeds up a chemical reaction by

a)

lowering the activation energy.

b)

raising the activation energy.

c)

releasing energy.

d)

absorbing energy.

29.

When two unlike substances are attracted by hydrogen bonding it is called ________________.

a)

adhesion

b)

cohesion

c)

polarity

d)

polypeptide

30.

When two like substances are attracted by hydrogen bonding it is called ________________.

a)

adhesion

b)

cohesion

c)

polarity

d)

polypeptide

31.

Which of these is correct about carbohydrates?

a)

Monosaccharides are made up of smaller polysaccharides.

b)

Only some polysaccharides are made up of monosaccharides.

c)

Glucose is a polysaccharide.

d)

Monosaccharides are used to build larger molecules like disaccharides and polysaccharides.

32.

What is the name for a catalyst that is made by a living organism?

a)

buffer

b)

enzyme

c)

lipid

d)

nucleic acid

33.

A polar molecule ________________.

a)

is caused by the unequal sharing of electrons

b)

causes one side of a molecule to have a partial positive charge and the other side to have a partial negative charge

c)

will bond with other polar molecules

d)

all of the above are correct

34.

Which of these are organic molecules (biomolecules). Select all that apply

a)

Nucleic acids

b)

Proteins

c)

Carbohydrates

d)

Water

e)

Lipids

35.

Isotopes are forms of the same element that have a different number of...

a)

children

b)

neutrons

c)

protons

d)

electrons

36.

True or False? Compounds are all molecules but all molecules are not compounds?

a)

True

b)

False

37.

What type of bond is illustrated here?

a)

James

b)

Covalent

c)

Ionic

d)

Hydrogen

38.

What kind of bond are the electron pairs shared equally?

a)

Ionic

b)

hydrogen

c)

covalent

d)

polar covalent

39.

What elements are most common in living organisms?

a)

Carbon and hydrogen

b)

oxygen and nitrogen

c)

Phosphorous and Sulfur

d)

silver and gold

40.

The mass of an atom is determined by the

a)

number of protons

b)

number of electrons

c)

number of neutrons

41.

Given the following equation, A + B --> AB, which represents a reactant?

a)

A

b)

B

c)

AB

42.

A protein that speed up a reaction is called

a)

activation energy

b)

a substrate

c)

an enzyme

d)

a product

43.

A substance formed by a chemical reaction would be

a)

activation energy

b)

a substrate

c)

an enzyme

d)

a product

44.

A substance that binds to the enzyme would be

a)

activation energy

b)

a substrate

c)

an enzyme

d)

a product

45.

The ability of an enzyme to function could be

a)

the pH of its environment

b)

the temperature of its environment

c)

the proteins unique shape

d)

all of the above

46.

In the diagram , what was the function of the enzyme-substrate complex?

a)

To help chemical bonds in the reactants/substrates to be broken

b)

To help chemical bonds in the reactants/substrates to be formed

c)

To dissolve the substrates

d)

To change block the active site to make it nonfunctional

47.

What might you be able to infer from the diagram??

a)

An enzyme cannot be reused at the end of a chemical reaction

b)

Substrates with any shape can bond to the active site of the enzyme

c)

In the reaction, bonds were both broken and made

d)

Substrates interact with enzymes anywhere on the enzyme

48.

Which of the following describes a water molecule?

a)

The molecule has equal sharing of pairs of electrons

b)

The electrons of the covalent bond between the oxygen atom and the hydrogen atoms are more strongly attracted to the oxygen nucleus.

c)

Water has a bent shape.

d)

The oxygen end of the water molecule has a slightly negative charge and the hydrogen ends of the molecule have a slightly positive charge.

49.

Water is a universal solvent because

a)

it's a polar molecule

b)

The slightly negative charge of oxygen attracts the positive atoms in a solute

c)

The slightly positive charge of the hydrogen atoms attract the negative atoms of a solute

d)

all of the above make water a universal solvent

50.

True or False? Hydrogen bonds between water molecules is a weak interacting between the hydrogen and oxygen, acting like a "bridge" between the water molecules and gives water some of its unique characteristics.

a)

TRUE

b)

FALSE

51.

What is the chemical reaction called and what is its purpose?

a)

Dehydration synthesis; adds water to make a bond

b)

Dehydration synthesis; removes water to make a bond

c)

Hydrolysis; adds water to break a bond

d)

Hydrolysis; removes water to break a bond

52.

Why is carbon the building block of organic molecules?

a)

It forms one covalent bond

b)

It forms two covalent bonds

c)

It forms three covalent bonds

d)

It forms four covalent bonds

53.

Which is true about polymers?

a)

They are formed by the process of dehydration synthesis.

b)

It's a molecule that contains many monomers covalently bonded together.

c)

They are the macromolecules.

d)

All of the above are true about polymers.

54.
This property of water describes it having two poles.
a)
solvent
b)
adhesion
c)
polarity
d)
cohesion
55.
Why is water considered the universal solvent?
a)
It has the ability to dissolve many substances.
b)
It can form bonds with molecules in other substances. 
c)
It can form bonds with other water molecules.
d)
It has two opposite poles.
56.
Amino acids make up ______.
a)
nucleic acids
b)
proteins
c)
carbohydrates
d)
lipids
57.
Solutes dissolve in solvents.
a)
True 
b)
False
58.
In an ______ reaction the product has more energy than the reactants. 
a)
exothermic
b)
endothermic
c)
enzymatic
d)
ionic
59.
When atoms in substances are rearranged to form different substances, a(n) _______ is occurring. 
a)
enzymatic reaction
b)
oxidation reaction 
c)
physical reaction
d)
chemical reaction
60.
How does the enzyme-substrate complex work?
a)
It breaks bonds and forms new ones.
b)
It attracts other molecules.
c)
It destroys the molecule.
d)
It inhibits the reaction. 
61.
Phospholipids are an example of lipids found in the cell membrane.
a)
True
b)
False
62.
What property of water lets it form bonds with other water molecules?
a)
cohesion
b)
adhesion
c)
polarity
d)
solvent
63.
What are polymers?
a)
small molecules
b)
molecules made from units of identical compunds
c)
atoms bonded by ionic bonds
d)
atoms bonded by peptide bonds
64.
Unsaturated fats are lipids characterized by _______.
a)
single bonds between carbons
b)
double bonds between carbons
65.
Molecules are held together by ______ bonds.
a)
ionic 
b)
covalent
c)
peptide
d)
hydrogen
66.
Nucleotides make up ______.
a)
proteins
b)
nucleic acids
c)
carbohydrates
d)
lipids
67.
Saturated fats are lipids characterized by _______.
a)
single bonds between carbons
b)
double bonds between carbons
68.
This macromolecule is involved in nearly every function of your body. 
a)
carbohydrates
b)
lipids
c)
proteins
d)
nucleic acids
69.
What is the active site?
a)
where reactions take place
b)
where substrates and enzyme bind
70.
In an ______ reaction the product has less energy than the reactants.
a)
exothermic
b)
endothermic
c)
ionic 
d)
enzymatic
71.
In a chemical reaction the ________ is on the left hand side of the reaction.
a)
products
b)
reactants
c)
substrate
d)
active site
72.
Letter "A" is pointing to:
a)
products
b)
active site
c)
enzyme
d)
substrate
73.
Letter "B" is pointing to:
a)
products
b)
active site
c)
enzyme
d)
substrate
74.
Letter "C" is pointing to:
a)
products
b)
active site
c)
enzyme
d)
substrate
75.
Letter "D" is pointing to:
a)
products
b)
active site
c)
enzyme
d)
substrate
76.
A solute is dissolved in a solvent to form a _______.
a)
solution
b)
compound
c)
reaction
d)
soluvent
77.
Proteins are made of monomers called ___________
a)
Nucleotides
b)
Monosaccharides
c)
Amino Acids
d)
Glycerol and fatty acids
78.
DNA and RNA are examples of 
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
79.
Monosaccharides are monomers of
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
80.
Waxes, oils and fats are examples of
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
81.
The organic compounds that have many structural purposes and are used in many processes within the
cell are called ____________________.
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
82.
Which macromolecule is shown?
 View Figure 1 (if not visible)
a)
lipid
b)
protein
c)
nucleic acid
d)
carbohydrate
83.
Which macromolecule is shown?
 View Figure 3 (if not visible)
a)
lipid
b)
protein
c)
nucleic acid
d)
carbohydrate
84.
Which macromolecule is shown?
 View Figure 4 (if not visible)
a)
lipid
b)
protein
c)
nucleic acid
d)
carbohydrate
85.
What type of macromolecule are enzymes?
a)
Protein
b)
Carbohydrate
c)
Lipid
d)
Nucleic Acid
86.
Which of the following organic compounds is the main source of energy for living things?
a)
carbohydrates
b)
lipids
c)
nucleic acids
d)
proteins
87.
Which macromolecule stores energy for long term use?
a)
Carbohydrates
b)
Lipids
c)
Nucleic Acids
d)
Proteins
88.

Which of the following is the best description of activation energy?

a)

Heat stored within the reactant molecules.

b)

Heat released as the reaction proceeds.

c)

Heat stored within the reactant molecules.

d)

Heat added to initiate (start) a reaction.

89.

In an EXOTHERMIC chemical reaction:

a)

energy is created

b)

energy is absorbed

c)

energy is destroyed

d)

energy is released

90.

Which of the following is NOT a property of water:

a)

It is an element.

b)

It displays adhesion.

c)

It is a Universal Solvent.

d)

It is a polar molecule

91.

Cohesion is a property of water that:

a)

Makes molecules of water stick to a surface.

b)

Makes molecules of water degrade.

c)

Makes molecules of water stick to each other.

d)

Makes molecules of water evaporate.

92.

Glycogen, (stores energy in the liver & muscle), is an example of which type of molecule?

a)

carbohydrate

b)

lipid

c)

protein

d)

nucleic acid

93.

Which of the following represents a formula for a chemical compound?

a)

He

b)

C

c)

P

d)

H2O

94.

Every individual water molecule acts like a little "magnet" because of:

a)

ionic bonds

b)

covalent bonds

c)

polar molecules

d)

Van der Walls bonds

95.

Steroids (natural ones made by the body) fit into this category of biological macromolecules:

a)

lipids

b)

carbohydrates

c)

proteins

d)

nucleic acids

96.

These 2 parts to an enzyme must fit like a lock & key:

a)

substrate & pH

b)

active site & reactants

c)

substrate & adhesion

d)

active site & substrate

97.

Which substance is not part of a nucleotide?

a)

phosphate

b)

base

c)

sugar

d)

water

98.

Which statement is true of chemical equations?

a)

Reactants are on the right.

b)

Products are on the right.

c)

Reactants have fewer atoms than products.

d)

Products have fewer atoms than reactants.

99.

A substrate is

a)

a substance that binds to an enzyme

b)

a substance formed by a chemical reaction

c)

a protein that speeds up a reaction

d)

a substance that initiates a reaction

100.

What joins amino acids together?

a)

peptide bonds

b)

hydrogen bonds

c)

van der Waals forces

d)

ionic bonds

101.

Molecules that have an unequal distribution of charges are called _________________.

a)

Water

b)

Charged

c)

Magnetic

d)

Polar molecules

102.

A ___________ is a weak interaction involving a hydrogen atom and a fluorine, oxygen, or nitrogen atom.

a)

Hydrogen bond

b)

Nitrogen bond

c)

Fluorine bond

d)

Oxygen bond

103.

A ___________ is a substance in which another substance dissolves (example: water is what the Kool-Aid dissolves in).

a)

Solute

b)

Solution

c)

Solvent

d)

Polar Compound

104.

A _________ is the substance that dissolves in the solvent (example: the Kool-aid is the substance that dissolves in the water).

a)

Solute

b)

Solution

c)

Solvent

d)

Compound

105.

___________ are molecules made from repeating units of identical or nearly identical compounds called monomers, held together by a chain of covalent bonds.

a)

Monomers

b)

Macromolecules

c)

Polymers

d)

Polymolecules

106.

A ____________ is a compound made of a chain of small amino acids.

a)

Lipid

b)

Carbohydrate

c)

Protein

d)

Nucleic Acid

107.

___________ are small compounds that are made of carbon, hydrogen, oxygen, nitrogen and sometimes sulfur.

a)

Lipids

b)

Amino Acids

c)

Proteins

d)

Nucleic Acids

108.

__________ are complex macromolecules that store and transmit genetic information.

a)

Lipids

b)

Amino Acids

c)

Proteins

d)

Nucleic Acids

109.

Nucleic acids are made of smaller repeating subunits made of carbon, oxygen, nitrogen, phosphorus, and hydrogen that are called _____________.

a)

Lipids

b)

Nucleotides

c)

Carbohydrates

d)

Amino Acids

110.
Because water has a positively charged end and a negatively charged end, it can be described as
a)
amphipathic
b)
hydrophobic
c)
polar
d)
nonpolar
111.
What property of water allows it to be such a versatile solvent that it is often called the "universal solvent?"
a)
Purity
b)
Polarity and cohesion
c)
High heat capacity
d)
Expansion upon freezing
112.
Some insects can stand on the surface of calm water. Their feet push the surface of the water down slightly, but they do not break the surface. Why?
a)
The insects are light enough so they do not break the hydrogen bonds holding the water molecules together
b)
The insects actually use their wings to hover slightly above the water’s surface and they only skim it with their feet.
c)
The insect’s feet are non-polar, so they are repelled by the polar water molecules and are pushed away from the water’s surface.
d)
The insects are small enough to see the individual water molecules, so they are able to step carefully from one molecule to the next
113.
Why does ice float?
a)
As water freezes, it expands and its density decreases.
b)
As water freezes, it takes up more hydrogen from the atmosphere, causing it to have a greater buoyancy.
c)
As water freezes, air becomes trapped between the hydrogen bonds of water molecules.
d)
As water freezes, it takes up more oxygen from the atmosphere, causing it to have a greater buoyancy.
114.
Why is water considered the universal solvent?
a)
It has the ability to dissolve many substances.
b)
It can form bonds with molecules in other substances. 
c)
It can form bonds with other water molecules.
d)
It has two opposite poles.
115.
Fats, oils and cholesterol are all types of what?
a)
cell membranes
b)
hormones
hormones
c)
lipids
d)
fatty acids
116.
Many plants have waxy coatings on some surfaces. This coating reduces water loss because it is not water-permeable. This waxy coating is which of the following types of organic molecule?
a)
protein
b)
carbohydrate
c)
nucleic acid
d)
 lipid
117.
Which line represents an enzyme-catalyzed reaction? 
a)
Line 1
b)
Line 2
118.
All polymers are made up of...
a)
monosaccharides
b)
monomers
c)
proteins
d)
None of these
119.
What are the four macromolecules?
a)
proteins, nucleic acids, carbohydrates, and lipids
b)
monosaccharides, lipids, polysaccaharides, and proteins
c)
RNA, DNA, proteins, and carbohydrates
d)
proteins, DNA, RNA, and steroids

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