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WorksheetsBiology Ch 6 Review
Total questions: 73
Worksheet time: 41mins
Name
Class
Date
1.
What does the image show?
a)
a physical reaction
b)
ion
c)
a chemical reaction
d)
activation energy
2.
Which process changes a chlorine atom into a chloride ion?
a)
electron gain
b)
electron loss
c)
proton gain
d)
proton loss
3.
Which of the following is a pure substance that cannot be broken down by a chemical reaction?
a)
a compound
b)
a mixture
c)
an element
d)
a neutron
4.
How do the isotopes of hydrogen differ?
a)
the number of protons
b)
the number of electrons
c)
the number of energy levels
d)
the number of neutrons
5.
The four main types of carbon-based molecules in organisms are carbohydrates, lipids, nucleic acids, and
a)
starches.
b)
fatty acids.
c)
monosaccharides.
d)
proteins.
6.
Proteins are polymers formed from
a)
lipids
b)
carbohydrates
c)
amino acids
d)
nucleic acids
7.
An enzyme speeds up a reaction by
a)
lowering the activation energy
b)
raising the activation energy
c)
releasing energy
d)
absorbing energy
8.
What is the use/function of carbohydrates?
a)
transmit genetic information
b)
source of energy
c)
to make proteins
d)
to build body structures
9.
Which of the following are types of carbohydrates?
a)
fats, waxes, and oils
b)
DNA & RNA
c)
sugars & starches
d)
enzymes & hormones
10.
Which of the following are examples of lipids?
a)
DNA & RNA
b)
sugars & starches
c)
fats, oils, waxes
d)
enzymes & antibodies
11.
What is the use/function of proteins?
a)
makes RNA
b)
builds cell membrane
c)
builds body structures (ie. bones & muscles
d)
causes surface tension
12.
Which is an example of a nucleic acid?
a)
sucrose & lactose
b)
hormones & antibodies
c)
DNA & RNA
d)
steroids
13.
What are enzymes used for?
a)
speed up chemical reactions
b)
store energy
c)
fight off infections
d)
structural support for cell walls of plants
14.
The energy needed to get a reaction started is called the
a)
reaction energy
b)
activation energy
c)
action energy
d)
red bull energy
15.
Which of the following is NOT an organic compound?
a)
C6H12O6
b)
H2O
c)
CH4
d)
C2H4O2
16.
These three elements make up carbohydrates
a)
carbon, helium, oxygen
b)
nitrogen, oxygen, water
c)
carbon, hydrogen, oxygen
d)
nitrogen, carbon, water
17.
____________________ have no double bond in their structure, causing them to have more hydrogen atoms than other fats.
a)
Unsaturated Fats
b)
Saturated Fats
c)
Oils
d)
Lotions
18.
Unsaturated fats are healthier for you. Which of the following foods contain primary unsaturated fats?
a)
butter
b)
bacon
c)
olive oil
d)
eggs
19.
Saturated fat comes from...
a)
Broccoli
b)
Butter
c)
Apples
d)
Pasta
20.
The smallest basic unit of matter is the
a)
molecule.
b)
atom.
c)
compound.
d)
cell.
21.
Atoms in molecules share pairs of electrons when they make
a)
covalent bonds.
b)
ionic bonds.
c)
hydrogen bonds.
d)
polymers.
22.
Which aspect of a chemical reaction is affected by enzymes?
a)
direction
b)
rate
c)
equilibrium
d)
pH
23.
Atoms in molecules share pairs of electrons when they make
a)
covalent bonds.
b)
ionic bonds.
c)
hydrogen bonds.
d)
polymers.
24.
The positively charged particle in an atom is called the
a)
neutron
b)
ion
c)
proton
d)
electron
25.
An enzyme speeds up a reaction by
a)
lowering the activation energy
b)
raising the activation energy
c)
releasing energy
d)
absorbing energy
26.
Which is considered neutral?
a)
pH of 4
b)
pH of 9
c)
pH of 14
d)
pH of 7
27.
What are enzymes NOT used for?
a)
speed up chemical reactions
b)
lower the activation energy
c)
create more products
d)
allow reactions to occur more easily
28.
Tomato juice has a pH of 4. Determine if it's an acid, base, or neutral.
a)
acid
b)
base
c)
neutral
29.
Household bleach has a pH of 12. Determine if it's an acid, base, or neutral.
a)
acid
b)
base
c)
neutral
30.
Which particles are found in an atom's nucleus?
a)
protons, neutrons and electrons
b)
protons and neutrons
c)
protons and electrons
d)
electrons and neutrons
31.
Isotopes are atoms of the same element that differ in their number of
a)
electrons
b)
protons
c)
neutrons
d)
buddies
32.
The energy needed to get a reaction started is called the
a)
reaction energy
b)
activation energy
c)
action energy
d)
red bull energy
33.
Isotopes are atoms of the same element that differ in their number of
a)
electrons
b)
protons
c)
neutrons
d)
buddies
34.
Attractions between water molecules are called
a)
Covalent bonds
b)
Ionic bonds
c)
Polar bonds
d)
Hydrogen bonds
35.
What do carbohydrates provide for the body?
a)
Helps build and repair body tissue
b)
Helps hydrate your body
c)
Provides your body's main source of energy
d)
Helps vital processes
36.
How do lipids function for cells?
a)
store information
b)
store energy
c)
breakdown wastes
d)
join with substrates
37.
What is the function of nucleic acids?
a)
store genetic information
b)
store energy (long-term)
c)
store energy (short-term)
d)
build skin, hair, nails, muscles
38.
What type of macromolecule are enzymes?
a)
Protein
b)
Carbohydrate
c)
Lipid
d)
Nucleic Acid
39.
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)
Enzymes can denature when the pH changes.
d)
Enzymes speed up chemical reactions.
40.
A monosaccharide is a:
a)
nucleic acid
b)
lipid
c)
carbohydrate
d)
protein
41.
What is the smallest unit of matter that cannot be broken down by chemical means?
a)
Atom
b)
Element
c)
Ion
d)
Isotope
42.
These biomolecules are fats, oils, waxes and steroids. They are also a result if we eat too many carbohydrates and why we don't melt in water.
a)
Carbohydrates
b)
Lipids
c)
Nucleic Acids
d)
Enzymes
43.
This biomolecule is used to make energy for our cells. The simplest is glucose, a monosaccharide.
a)
Carbohydrates
b)
Lipids
c)
Nucleic Acids
d)
Proteins
44.
Nucleic Acids are made up of smaller subunits called....
a)
Nucleotides
b)
Lipids
c)
Monosaccharides
d)
Subunits
45.
How many Amino Acids does our body use to make proteins?
a)
20
b)
10
c)
6
d)
2
46.
The cells in living things contain four main molecules that allow the cells to function. Which of these molecules cannot mix with water?
a)
lipids
b)
proteins
c)
nucleic acids
d)
carbohydrates
47.
Animal cells have four main molecules that keep the body healthy. What type of molecule in animal cells provides a “map” for making proteins?
a)
lipids
b)
proteins
c)
nucleic acids
d)
carbohydrates
48.
What type of molecule provides immediate energy in cells?
a)
lipids
b)
proteins
c)
carbohydrates
d)
nucleic acids
49.
What are the four main types of molecules found in the cells of living things?
a)
carbohydrates, lipids, nucleic acids, and proteins
b)
lipids, nutrients, nucleic acids, and carbon dioxide
c)
carbon dioxide, hydrogen, oxygen, and various salts
d)
atoms, molecules, chemical compounds, and carbohydrates
50.
When people eat foods high in proteins, such as meat, eggs and cheese, the body breaks down the proteins into smaller molecules. What is supplied to cells when the body breaks down proteins?
a)
amino acids
b)
nucleic acids
c)
phospholipids
d)
carbohydrates
51.
Kayla has a cat with blue eyes. The color of her cat’s eyes is determined by deoxyribonucleic acid (DNA). The DNA directs which substance to construct these eyes?
a)
lipids
b)
water
c)
proteins
d)
carbohydrates
52.
Is this substance acidic, basic, or neutral?
a)
Acidic
b)
Basic
c)
Neutral
53.
Is this substance acidic, basic, or neutral?
a)
Acidic
b)
Basic
c)
Neutral
54.
What does pH measure?
a)
Amount of Oxygen Ions
b)
Amount of Hydrogen Ions
c)
The amount of salt in a solution
d)
The density
55.
A solution with a pH of 3.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
56.
A solution with a pH of 8.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
57.
What do the coefficients need to be in the following equation in order to be balanced?
_CH4 + _O2 → _CO2 + _H2O
_CH4 + _O2 → _CO2 + _H2O
a)
1,2,1,1
b)
2,1,2,1
c)
1,2,1,2
d)
0,2,0,2
58.
Complete the chemical reaction below.
6CO2 + 6H2O ---> C6H12O6 + _______
6CO2 + 6H2O ---> C6H12O6 + _______
a)
6O2
b)
6CO2
c)
6H2O
d)
6HO
59.
Which is a substance the produces OH- ions when dissolved in water?
a)
a base
b)
an acid
c)
a buffer
d)
salt
60.
________ represents a formula for an organic chemical compound.
a)
H
b)
CO2
c)
H2O
d)
NaCl
61.
Which is the negatively charged particle located outside of the nucleus of an atom?
a)
electron
b)
neutron
c)
silicon
d)
proton
62.
Balance the chemical reaction below.
C6H12O6+ ___O2---> __H2O + __CO2
C6H12O6+ ___O2---> __H2O + __CO2
a)
1,1,1
b)
1,6,1
c)
3,3,3
d)
6,6,6
63.
Examples of which biological macromolecule include glucose, fructose, starch, and glycogen?
a)
Lipids
b)
Carbohydrates
c)
Nucleic Acids
d)
Proteins
64.
What is one job proteins do NOT have in the body?
a)
Providing energy
b)
Structure and formation
c)
Speeding up chemical reactions
d)
Transporting things through cell membrane
65.
__________________ provide us with quick energy, while _________________ are our secondary energy source.
a)
Lipids, proteins
b)
Carbohydrates, nucleic acids
c)
Proteins, carbohydrates
d)
Carbohydrates, lipids
66.
Which macromolecule contains Carbon, Hydrogen, and Oxygen in a 1:2:1 ratio?
a)
Carbohydrates
b)
Lipids
c)
Nucleic Acids
d)
Proteins
67.
Which macromolecule contains mostly long chains of Carbon and Hydrogen?
a)
Carbohydrates
b)
Lipids
c)
Nucleic Acids
d)
Proteins
68.
Which macromolecule must contain Carbon, Hydrogen, Oxygen, Nitrogen, and Phosphorus?
a)
Carbohydrates
b)
Lipids
c)
Nucleic Acids
d)
Proteins
69.
Which macromolecule is made of nucleotides?
a)
Carbohydrates
b)
Lipids
c)
Nucleic Acids
d)
Proteins
70.
Which macromolecule is made of amino acids?
a)
Carbohydrates
b)
Lipids
c)
Nucleic Acids
d)
Proteins
71.
Which macromolecule is made of a triglyceride (3 fatty acids and 1 glycerol)?
a)
Carbohydrates
b)
Lipids
c)
Nucleic Acids
d)
Proteins
72.
Which of the following is NOT a biological macromolecule?
a)
Water
b)
Lipid
c)
Carbohydrate
d)
Nucleic Acid
73.
Enzymes are a special type of _______________.
a)
Protein
b)
Carbohydrate
c)
Nucleic Acid
d)
Lipid
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