Cellular Respiration
Section 9.3
Homework:
1. In what organelle does cellular respiration
take place?
2. What are the inputs to cellular respiration?
What are the outputs?
3. What are the three phases of cellular
respiration? What happens in each phase?
4. Where in the cell do the three phases take
place?
5. Draw and label a mitochondrion.
Photosynthesis Review
1. What is the purpose of photosynthesis?
2. Where does it take place?
Vocabulary to know:
-Cellular Respiration: the process by which mitochondria
break down food molecules to produce ATP
-Anaerobic: requires no oxygen
-Aerobic: requires oxygen
-NADH: An energy carrier molecule
NAD+: Empty battery
NADH: Full battery
-FADH2: An energy carrier molecule
FAD: Empty battery
FADH2: Full battery
Energy carrier molecules:
ATP
NADPH
NADH
FADH2
-Cellular Respiration: the process by which mitochondria
produce ATP from food molecules
-Takes place in the mitochondria
Mitochondria
-Cellular Respiration: the process by which mitochondria
produce ATP from food molecules
-Takes place in the mitochondria
-Outer Membrane
-Inner membrane
-Matrix: the part
enclosed by the inner
membrane
-Intermembrane space:
the part between the
inner and outer
membrane
-Cellular Respiration: the process by which mitochondria
produce ATP from food molecules
-Takes place in the mitochondria
-Molecular formula:
C6H12O6 + 6O2  6CO2 + 6H20 + energy
Sugar
6 Oxygen
6 Water
6 Carbon
Dioxide
Photosynthetic equation:
6CO2 + 12H2O + light → C6H12O6 + 6O2 + 6H2O
6 Carbon
Dioxide
1 Molecule
of Sugar
12 Water
6 Water
6 Oxygen
Comparison:
Photosynthesis:
In:
Carbon Dioxide
Water
Energy (Light)
Out:
Sugar
Oxygen
Cellular Respiration:
In:
Out:
Sugar
Oxygen
Carbon Dioxide
Water
Energy (ATP)
-Cellular Respiration: the process by which mitochondria
produce ATP from food molecules
-Takes place in the mitochondria
-Molecular formula:
C6H12O6 + 6O2  6CO2 + 6H20 + energy
-3 Stages of Cellular Respiration:
Cytoplasm!
1. Glycolysis
A process that splits glucose into two molecules of
pyruvic acid
Mitochrondrial
Matrix!
Inner
mitochondrial
membrane
2. Citric Acid Cycle
Produces ATP, NADH, and FADH2 that are used in
the electron transport chain
3. Electron Transport Chain: produces bulk of ATP
Homework:
1. In what organelle does cellular respiration
take place?
2. What are the inputs to cellular respiration?
What are the outputs?
3. What are the three phases of cellular
respiration? What happens in each phase?
4. Where in the cell do the three phases take
place?
5. Draw and label a mitochondrion.
Classwork:
1. In what organelle does cellular respiration
take place?
The mitochondria
2. What are the inputs to cellular respiration?
What are the outputs?
In: Oxygen, sugar. Out: CO2, H2O, energy
3. What are the three phase of photosynthesis?
What happens in each phase?
Glycolysis (splits sugar into pyruvate), Citric acid cycle (uses
Acetyl CoA to make NADH, FADH2, and ATP), ETC (makes a lot
of ATP)
4. Where in the cell do the three phases take
place?
G: Cytoplasm. CAC: matrix. ETC: inner mitochondrial
membrane
5. Draw and label a mitochondrian.
Terms to know for the cellular respiration
vocab quiz:
Mitochondrion
Cellular respiration
Anaerobic
Aerobic
Matrix
Intermembrane space
Glycolysis
Citric Acid Cycle
Where glycolysis takes place
Where the citric acid cycle takes place
Where the electron transport chain takes
place
Terms to know for the cellular respiration vocab quiz:
-Mitochondrion: the organelle in which cellular respiration takes place
-Cellular respiration: the process by which the cell releases energy from
food molecules
-Anaerobic: requires no oxygen
-Aerobic: requires oxygen
-Matrix: the space inside the inner membrane of the mitochondrion
-Intermembrane space: the space between the inner and outer
membranes of the mitochondrion
-Glycolysis: (1st stage of cellular respiration) the process of splitting
glucose into two molecules of pyruvic acid
-Citric acid cycle: (2nd stage of cellular respiration) the process of
producing ATP, NADH, and FADH2 which will be used to fuel the electron
transport chain (3rd stage of cellular respiration)
-Where glycolysis takes place: cytoplasm (outside the mitochondrion)
-Where the citric acid cycle takes place: mitochondrial matrix
-Where the electron transport chain takes place: the inner membrane
Glycolysis/ Cellular Respiration Quiz Questions
1. What is glycolysis?
2. What are the products of glycolysis?
3. Where does glycolysis take place?
*4. What is pyruvate decarboxylation?
*5. Where does pyruvate decarboxylation take place?
6. What are the products of the citric acid cycle?
7. What are the total products of glycolysis, *pyruvate
decarboxylation, and the citric acid cycle?
8. Where do these products go?
STEPS OF CELLULAR RESPIRATION:
1. Glycolysis: A process that splits glucose into two
molecules of pyruvate
-Produces 2 net ATP and 2 NADH
Terms to know for the cellular respiration
vocab quiz:
Mitochondrion: the organelle in which cellular respiration takes place
Cellular respiration: the process by which the cell releases energy from
food molecules
Anaerobic: requires no oxygen
Aerobic: requires oxygen
Matrix: the space inside the inner membrane of the mitochondrion
Intermembrane space: the space between the inner and outer
membranes of the mitochondrion
Glycolysis: (1st stage of cellular respiration) the process of splitting
glucose into two molecules of pyruvic acid
Citric acid cycle: (2nd stage of cellular respiration) the process of
producing ATP, NADH, and FADH2 which will be used to fuel the electron
transport chain (3rd stage of cellular respiration)
Where glycolysis takes place: cytoplasm (outside the mitochondrion)
Where the citric acid cycle takes place: mitochondrial matrix
Where the electron transport chain takes place: the inner membrane
Mitochondrion Quiz
5. Label
6. Define
1.
2.
3. Label
4. Define
Mitochondrion Quiz
1. Outer membrane
2. Inner
membrane
5. Matrix
6. Space inside the inner membrane
3. Intramembrane space
4. Space between inner
and outer membranes
1. Glycolysis: A process that splits glucose into two
molecules of pyruvate
Glucose: 6
carbon
molecule
Pyruvate:
3 carbon
molecule
-Glycolysis uses up 2 ATP and generates 4 ATP. Therefore,
glycolysis produces 2 net ATP (and 2 NADH)
1. Glycolysis: A process that splits glucose into two
molecules of pyruvic acid
-Produces 2 net ATP and 2 NADH
-Glycolysis is an anaerobic process
-Takes place in the cytoplasm
1.5: Pyruvate decarboxylation: Pyruvate is shipped to the
intermembrane space where it is converted to a molecule
called Acetyl CoA
This process produces 2 NADH
Mitochondria
MATRIX
Citric Acid Cycle
Pyruvate Acetyl CoA
Glycolysis
Cytoplasm
INTERMEMBRANE
SPACE
2. Citric acid cycle: a cycle that adds Acetyl CoA to other
molecules to produce 3 NADH, 1 ATP, and 1 FADH2
2. Citric acid cycle: a cycle that adds Acetyl CoA to other
molecules to produce 3 NADH, 1 ATP, and 1 FADH2
Acetyl CoA
Oxaloacetate
2. Citric acid cycle: a cycle that adds Acetyl CoA to other
molecules to produce 3 NADH, 1 ATP, and 1 FADH2 per
Acetyl CoA
-Note that glycolysis yields 2 pyruvate, and each pyruvate is
converted to an Acetyl CoA.
-Therefore, for each molecule of glucose, the Citric Acid Cycle
produces 6 NADH, 2 ATP, and 2 FADH2
2. Citric acid cycle: a cycle that adds Acetyl CoA to other
molecules to produce 3 NADH, 1 ATP, and 1 FADH2 per
Acetyl CoA
-Note that glycolysis yields 2 pyruvate, and each pyruvate is
converted to an Acetyl CoA.
-Therefore, for each molecule of glucose, the Citric Acid Cycle
produces 6 NADH, 2 ATP, and 2 FADH2
Pyruvate
C C C
Acetyl CoA
C C
3 NADH
1 ATP
1 FADH2
Glucose
C C C C C C
Pyruvate
C C C
Acetyl CoA
C C
3 NADH
1 ATP
1 FADH2
Products so far:
Citric Acid Cycle
Glycolysis
2 NADH
2 net ATP
Pyruvate  Acetyl CoA
2 NADH
TOTAL:
10 NADH
4 ATP
2 FADH2
Become the inputs
for the electron
transport chain
6 NADH
2 ATP
2 FADH2
Glycolysis/ Cellular Respiration Quiz Questions
1. What is glycolysis?
2. What are the products of glycolysis?
3. Where does glycolysis take place?
4. What is pyruvate decarboxylation?
5. Where does pyruvate decarboxylation take place?
6. What are the products of the citric acid cycle?
7. What are the total products of glycolysis, pyruvate decarboxylation,
and the citric acid cycle?
8. Where do these products go?
1. What is glycolysis?
A process that splits glucose into two molecules of pyruvic acid
2. What are the products of glycolysis?
2 NADH, 2 ATP (2 pyruvates)
3. Where does glycolysis take place?
cytoplasm
4. What is pyruvate decarboxylation?
Pyruvate -> Acetyl CoA
5. Where does this conversion take place?
Intermembrane space
6. What are the products of the citric acid cycle?
6 NADH, 2 ATP, 2 FADH2
7. What are the total products of glycolysis, pyruvate decarboxylation,
and the citric acid cycle?
10 NADH, 4 ATP, 2 FADH2
8. Where do these products go?
They will be used in the electron transport chain
Products so far:
Citric Acid Cycle
Glycolysis
2 NADH
2 net ATP
Pyruvate  Acetyl CoA
2 NADH
TOTAL:
10 NADH
4 ATP
2 FADH2
Become the inputs
for the electron
transport chain
6 NADH
2 ATP
2 FADH2
3. Electron Transport Chain: provides bulk of the ATP (38)
-In the ETC, each NADH produces 3 ATP. Each FADH2
produces 2 ATP.
3. Electron Transport Chain: provides bulk of the ATP (38)
-In the ETC, each NADH produces 3 ATP. Each FADH2
produces 2 ATPS.
GLYCOLYSIS/C.A. CYCLE:
becomes
10 NADH
4 ATP
2 FADH2
ATP PRODUCED IN THE ETC
30 ATP
4 ATP
4 ATP
Total ATP produced by cellular respiration:
38 ATP
H+
Intermembrane Space
H+
H+
Electron Transport
Chain
H+
H+
H+
H+
H+
H+
Matrix
H+
H+
H+
H+
Intermembrane Space
H+
H+
H+
H+
H+
E- E-
H+
NADH
FADH2
NAD+
FAD
H+
H+
Matrix
H+
H+
H+
H+
Intermembrane Space
H+
H+
H+
H+
H+
E- E-
H+
NADH
FADH2
NAD+
FAD
H+
H+
Matrix
H+
H+
H+
H+
Intermembrane Space
H+
H+
H+
H+
H+
EE-
H+
NADH
FADH2
NAD+
FAD
H+
H+
Matrix
H+
H+
H+
H+
Intermembrane Space
H+
H+
H+
H+
H+
EE-
H+
NADH
FADH2
H+
H+
NAD+
FAD
H+
Matrix
H+
H+
H+
Intermembrane Space
H+
H+
H+
H+
H+
H+
E-
E-
NADH
FADH2
NAD+
FAD
H+
Matrix
H+
H+
H+
H+
H+
Intermembrane Space
H+
H+
H+
H+
H+
H+
H+
H+
E- E-
NADH
FADH2
NAD+
FAD
H and O2
H+
Matrix
H+
H+
H2O
H+
Intermembrane Space
H+
H+
H+
H+
H+
H+
H+
H+
E- E-
NADH
FADH2
NAD+
FAD
H and O2
H+
Matrix
H+
H+
H2O
Mitochondria
MATRIX
Pyruvate Acetyl CoA
Glycolysis
INTERMEMBRANE
SPACE
Mitochondria
MATRIX
H+
H+
H+
H+
+
H+ H
H+
ETC
INTERMEMBRANE
SPACE
Mitochondria
H+
H+
H+
H+
MATRIX
+
H+ H
H+
INTERMEMBRANE
SPACE
Mitochondria
H+
H+
MATRIX
+
H
H+ H+ H+
H+
INTERMEMBRANE
SPACE
Mitochondria
H+
H+
MATRIX
ATP
Synthase
+
H
H+ H+ H+
H+
INTERMEMBRANE
SPACE
Mitochondria
H+
H+
MATRIX
+
H
H+ H+ H+
H+
INTERMEMBRANE
SPACE
Mitochondria
H+
H+
MATRIX
H+ H++
H
H+
H+
INTERMEMBRANE
SPACE
Mitochondria
MATRIX
H+
H+
H+
H+
H+
H
H+
+
ATP
INTERMEMBRANE
SPACE
Mitochondria
MATRIX
H+
H+
H+
H
H+
+
ATP
H+
H+
ATP ATP
ATP
ATP
ATP
INTERMEMBRANE
SPACE
Mitochondria
MATRIX
H+
H+
H+
H+
H+
H
H+
+
(38 ATP)
ATP
ATP ATP
ATP
ATP
ATP
INTERMEMBRANE
SPACE
ETC Quiz Questions
1. What provides the electrons for the electron
transport chain?
2. How many ATPs does one molecule of NADH make?
3. How many ATPs does one molecule of FADH2 make?
4. What is the total number of ATPs produce by
cellular respiration?
5. Why is it important for the cell to make ATP?
1. What supplies the electrons for the electron
transport chain?
NADH, FADH2
2. How many ATPs does one molecule of NADH make?
3
3. How many ATPs does one molecule of FADH2 make?
2
4. What is the total number of ATPs produce by
cellular respiration?
38
5. What does the cell do with ATP?
Use it for cell functions
Cellular Respiration Quiz Thursday
What is the point of cellular respiration?
Where does cellular respiration take place?
Draw and label a mitochondrion.
What are the three phases of cellular respiration?
What happens in each phase of cellular respiration?
What are the inputs and outputs of cellular respiration?
Where do animal cells get sugar for cellular respiration?
Where do plant cells get sugar for cellular respiration?
Cellular Respiration Quiz
1. Draw
and label a mitochondrion. Include the
following terms: inner membrane, outer
membrane, christae, matrix, intramembrane
space
2. What are the three phases of cellular
respiration?
3. What happens in each phase of cellular
respiration?
4. What are the inputs and outputs of cellular
respiration?
Molecular version of CR
https://www.youtube.com/watch?v=-Gb2EzF_XqA
Bozeman photosynthesis/cellular respiration
http://www.youtube.com/watch?v=0IJMRsTcwcg&feature=related
Photosynthesis and Cellular Respiration Review
1. Where do plant cells get their food?
2. What is the point of photosynthesis?
3. Where does photosynthesis take place?
4. Draw and label a chloroplast.
What are the two phases of photosynthesis?
What happens in each phase of
photosynthesis?
What are the inputs and outputs of
photosynthesis?
What is the point of cellular respiration?
Where does cellular respiration take place?
Draw and label a mitochondrion.
What are the three phases of cellular
respiration?
What happens in each phase of cellular
respiration?
What are the inputs and outputs of cellular
respiration?
Where do animal cells get sugar for cellular
respiration?
Where do plant cells get sugar for cellular
respiration?
Is cellular respiration aerobic or anaerobic?
Lactic Acid Fermentation Lab Quiz
1. What caused the burning sensation in the subject’s muscles?
2. How do we know that the subject’s muscles were using
fermentation?
3. Why did the subject’s muscles rely on fermentation instead of
cellular respiration?
4. What are the advantages of cellular respiration?
5. What are the advantages of fermentation?
Lactic Acid Fermentation Lab Quiz
1. What caused the burning sensation in the subject’s muscles?
The build up of lactic acid
2. How do we know that the subject’s muscles were using
fermentation?
There was lactic acid present in the subject’s muscles
3. Why did the subject’s muscles rely on fermentation instead of
cellular respiration?
The subject’s muscles were using oxygen at a faster rate than
what his/her body could provide, so cells had to use
anaerobic respiration to provide ATP
4. What are the advantages of cellular respiration?
Makes more ATP
5. What are the advantages of fermentation?
Doesn’t need oxygen to make ATP