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WorksheetsCellular Respiration
Total questions: 81
Worksheet time: 53mins
Name
Class
Date
1.
Enzymes that make or break down ATP are called____________.
a)
isomerases
b)
polymerases
c)
kinases
d)
chimases
2.
Where does glycolysis take place in cells?
a)
Cytoplasm
b)
Mitochondrion
c)
Endoplasmic Reticulum
d)
Ribosomes
3.
Glycolysis results in the net gain of:
a)
2 ATP
b)
4 ATP
c)
4 NADH
d)
2 Acetyl CoA
4.
Glycolysis results in the total production of:
a)
2 ATP
b)
4 ATP
c)
4 NADH
d)
2 Acetyl CoA
5.
Which of the following is not a requirement for glycolysis?
a)
Oxygen
b)
ATP
c)
NAD+
d)
Glucose
6.
The first step in getting energy in the cell by breaking down glucose is known as
a)
the Krebs cycle
b)
electron transport
c)
fermentation
d)
glycolysis
7.
What is the starting molecule for glycolysis?
a)
Glucose
b)
ADP
c)
Oxygen
d)
Pyruvic Acid
8.
Glycolysis requires
a)
ATP
b)
Oxygen
c)
sunlight
d)
NADP+
9.
In glycolysis, glucose is converted into two molecules of _____.
a)
citric acid
b)
oxaloacetic acid
c)
pyruvic acid
d)
Acetyl CoA
10.
What is Anaerobic Respiration?
a)
process of producing energy without oxygen.
b)
process of producing energy with oxygen.
11.
This molecule contains three phosphate groups
a)
ADP
b)
ATP
c)
Mitochondria
d)
Nucleus
12.
This molecule contains two phosphate groups
a)
ADP
b)
ATP
c)
Mitochondria
d)
Nucleus
13.
In glycolysis, how many molecules of NADH are formed?
a)
1
b)
2
c)
3
d)
4
14.
Glucose is broken down into pyruvate in a process known as
a)
glycolysis
b)
electron transport
c)
the Krebs cycle
d)
phosphorylation
15.
Most of the CO2 produced during cellular respiration is released during
a)
the citric acid cycle
b)
the electron transport chain
c)
glycolysis
d)
chemiosmosis
17.
Most of a cell's ATP is produced during this stage of cellular respiration.
a)
oxidative phosphorylation
b)
glycolysis
c)
the citric acid cycle
d)
fermentation
17.
Most of a cell's ATP is produced during this stage of cellular respiration.
a)
oxidative phosphorylation
b)
glycolysis
c)
the citric acid cycle
d)
fermentation
18.
Pyruvate must be "groomed" in the cytoplasm to form this 2-carbon compound.
a)
acteyl CoA
b)
malate
c)
lactic acid
d)
FAD
19.
At the start of the the citric acid cycle acetyl CoA joins with this 4-carbon compound to create citrate.
a)
oxaloacetate
b)
FADH2
c)
carbon monoxide
d)
glucose
20.
The role of oxygen in cellular respiration is to
a)
accept electrons
b)
produce ATP
c)
groom pyruvate
d)
release ions
21.
This term refers to the production of ATP without oxygen being present.
a)
anaerobic
b)
prokaryotic
c)
biogenic
d)
organic
22.
Fermentation occurs in the cell's
a)
cytoplasm
b)
nucleus
c)
cell membrane
d)
cristae
23.
Which of the following is NOT a waste product produced during fermentation processes?
a)
NADH
b)
ethanol
c)
lactate
d)
CO2
24.
To make large amounts of energy, an eukaryotic cell must use oxygen and
a)
glucose
b)
water
c)
carbon dioxide
d)
light
25.
Which of these is NOT an anaerobic process?
a)
electron transport chain
b)
glycolysis
c)
citric acid cycle
d)
fermentation
26.
The movement of H+ ions down a concentration gradient to release large amounts of ATP is
a)
chemiosmosis
b)
phosphorylation
c)
anaerobic respiration
d)
pyruvate grooming
27.
In order to create NADH and FADH2 , NAD and FAD must be
a)
reduced
b)
oxidized
c)
replaced
d)
ionized
28.
The waste products of alcoholic fermentation are ethanol and
a)
CO2
b)
pyruvate
c)
citrate
d)
ADP
29.
The citric acid cycle and glycolysis can both yield _____ molecules of ATP.
a)
2
b)
4
c)
3
d)
5
30.
The waste product _______ is formed during the electron transport chain when H- unite with O2 molecules.
a)
water
b)
glucose
c)
carbon dioxide
d)
lactate
31.
This molecule contains three phosphate groups
a)
ADP
b)
ATP
c)
Mitochondria
d)
Nucleus
32.
This molecule contains two phosphate groups
a)
ADP
b)
ATP
c)
Mitochondria
d)
Nucleus
33.
This process releases chemical energy from sugars and other carbon-based molecules to make ATP when oxygen is present.
a)
photosynthesis
b)
light-independent reaction
c)
cellular respiration
d)
light-dependent reaction
34.
What is the net gain of ATP during glycolysis?
a)
1
b)
2
c)
3
d)
4
35.
Glycolysis
a)
does not need oxygen
b)
does need oxygen
36.
Glycolysis takes place in the
a)
mitochondria
b)
cell membrane
c)
cytoplasm
d)
nucleus
37.
This is the first step of cellular respiration
a)
Glycolysis
b)
Lactic Acid Fermentation
c)
Alcoholic Fermentation
d)
Aerobic Respiration
38.
Which is not a waste product of cellular respiration?
a)
Water
b)
Heat
c)
Carbon Dioxide
d)
Oxygen
39.
This process does not make ATP alone, but it allows glycolysis to continue making ATP when oxygen is unavailable for cellular respiration.
a)
Fermentation
b)
Electron Transport Chain
c)
Glycolysis
d)
Kreb's cycle
40.
This means that oxygen is needed
a)
anaerobic
b)
aerobic
41.
What is one of the reactants of cellular respiration?
a)
energy
b)
glucose
c)
carbon dioxide
d)
water
42.
______________ produces the most ATP.
a)
photosnthesis
b)
aerobic respiration
c)
anaerobic respiration
d)
glycolysis
43.
What are the products of aerobic respiration?
a)
Glucose and oxygen
b)
Carbon dioxide and water
c)
Lactic acid
d)
Carbon monoxide
44.
The mitochondria is responsible for ...
a)
photosynthesis
b)
anaerobic respiration
c)
aerobic respiration
d)
fermentation
45.
How many ATP are produced in aerobic respiration?
a)
2
b)
33
c)
4
d)
36
46.
In which way are photosynthesis and cellular respiration different?
a)
Cellular respiration stores ATP, while photosynthesis releases ATP.
b)
Cellular respiration produces oxygen, while photosynthesis uses oxygen.
c)
Photosynthesis releases energy, while cellular respiration stores energy.
d)
Photosynthesis used carbon dioxide, while cellular respiration produces carbon dioxide.
47.
What is the correct equation for cellular respiration?
a)
6O2 + C6H12O6 -> 6CO2 + 6H2O + Energy
b)
6O2 + C6H12O6 + Energy -> 6CO2 + 6H2O
c)
6CO2 + 6H2O -> 6O2 + C6H12O6 + Energy
d)
6CO2 + 6H2O + Energy -> 6O2 + C6H12O6
48.
Where does the Krebs Cycle take place?
a)
mitochondria
b)
chloroplast
c)
cytoplasm
d)
nucleus
49.
Cellular Respiration's goal is to
a)
make water
b)
make ATP
c)
make glucose
d)
make oxygen
50.
Which molecule isn't an energy carrier?
a)
FADH2
b)
NADH
c)
oxygen
d)
ATP
51.
The expression "feel the burn" means that a person exercising is doing
a)
lactic acid fermentation
b)
alcoholic fermentation
c)
photosynthesis
d)
aerobic respiration
52.
ATP becomes ADP when it
a)
loses a phosphate
b)
is exposed to sunlight
c)
gains a phosphate
d)
gains energy
53.
Which is a product of the Krebs Cycle?
a)
glucose
b)
carbon dioxide
c)
water
d)
pyruvate
54.
Which is a product of the electron transport chain?
a)
glucose
b)
carbon dioxide
c)
water
d)
oxygen
55.
When a bond is made
a)
energy is stored
b)
energy is released
56.
When a bond is broken
a)
energy is stored
b)
energy is released
57.
Where do the electrons from the energy carriers in the ETC go to?
a)
ATP
b)
ADP
c)
NADH
d)
Oxygen
58.
Where does the energy created in the Krebs cycle go?
a)
cytoplasm
b)
mitochondrial matrix
c)
ETC
d)
stroma
59.
Lactic acid fermentation occurs in your muscles after a workout because your cells are struggling to get...
a)
Glucose
b)
Sunlight
c)
Oxygen
d)
Water
60.
The process carried out by yeast that causes bread to rise is
a)
alcoholic fermentation
b)
lactic acid fermentation
c)
cellular respiration
d)
yeast mitosis
61.
Fermentation is:
a)
Cellular Respiration
b)
Photosynthesis
c)
Aerobic
d)
Anaerobic
62.
What is a disadvantage of fermentation as a process?
a)
It produces too much ATP
b)
It only produces 2 ATP
c)
It occurs in the absence of oxygen
d)
It is only for quick bursts of energy
63.
How are lactic acid and alcoholic fermentation similar?
a)
They have the same products
b)
They have the same reactants
c)
They both require oxygen
d)
They occur in the same organisms
64.
Fermentation occurs in the cell's
a)
cytoplasm
b)
nucleus
c)
cell membrane
d)
cristae
65.
Which of the following is NOT a stage of cellular respiration?
a)
fermentation
b)
electron transport
c)
glycolysis
d)
Krebs cycle
66.
Which pathway is common to both fermentation and cellular respiration?
a)
Krebs cycle
b)
electron transport chain
c)
glycolysis
d)
formation of Acetyl CoA
67.
Where does the Krebs Cycle takes place?
a)
Cytoplasm of the cell
b)
Matrix of the mitochondrion
c)
Inner membrane of the mitochondrion
d)
Outer membrane of the mitochondrion
68.
Where does the electron transport chain take place?
a)
Cytoplasm of the cell
b)
Matrix of the mitochondrion
c)
Inner membrane of the mitochondrion
d)
Outer membrane of the mitochondrion
69.
What is produced during glycolysis? Check all that apply.
a)
2 NET ATP
b)
4 TOTAL ATP
c)
2 NADH
d)
2 pyruvate molecules
70.
What do the energy carrying molecules made in the Kreb's cycle do? Choose all that apply.
a)
Go to the inner membrane to power the electron transport chain.
b)
Go to the inner membrane to be oxidized.
c)
Recycle back to the Kreb's cycle when they have been oxidized.
d)
Go to the inner membrane to be reduced.
71.
The reduced form of NAD+ is
a)
NADH
b)
NADPH
c)
FADH2
d)
ATP
72.
Which molecules are oxidized to release electrons to power the pumping of H+ in the electron transport chain? Check all that apply.
a)
NADH
b)
FADH2
c)
ATP
d)
ADP
73.
What must happen to ADP to form ATP? Check all that apply.
a)
ADP must be reduced.
b)
ADP must be oxidized.
c)
Energy is used to form a bond.
d)
ADP must be phosphorylated.
74.
For every molecule of glucose, how many molecules of FADH2 are produced by the Krebs Cycle?
a)
1
b)
2
c)
4
d)
6
75.
The ETC makes water. To make this water, where do the hydrogen atoms come from?
a)
glucose
b)
pyruvate
c)
NADH and FADH2
d)
oxygen
76.
NAD and FAD are _________ in the Krebs cycle.
a)
oxidized
b)
reduced
c)
carboxylated
d)
phosphorylated
77.
In the ETC, what is the last electron acceptor?
a)
water
b)
oxygen
c)
NAD
d)
FAD
78.
Hydrogen ions moving from the intermembrane space into the mitochondrial matrix is called
a)
chemiosmosis
b)
phosphorylation
c)
oxidation
d)
reduction
79.
The outer membrane of the mitochondrion on the photo
a)
A
b)
B
c)
C
d)
D
80.
Matrix of the mitochondrion
a)
A
b)
B
c)
C
d)
D
81.
The inner membrane of the mitochondrion
a)
A
b)
B
c)
C
d)
D
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