CELLULAR RESPIRATION NOTES
PYRUVIC ACID
(ETC)
Location:
(Krebs Cycle)
Location:
CELLULAR RESPIRATION
 Write
“cell respiration” down the right
side of your paper
 Cellular
Respiration takes place in two
locations:
Cytoplasm (Glycolysis)
 Mitochondria (Krebs Cycle & ETC)

CELLULAR RESPIRATION
 Glycolysis


Occurs in the cytoplasm.
Write this as the location of glycolysis in
the box on your paper.
GLYCOLYSIS
occurs in cytoplasm
PYRUVIC ACID
(ETC)
Location:
(Krebs Cycle)
Location:
CELLULAR RESPIRATION
 Glycolysis

1. Glucose enters the cytoplasm,
activating glycolysis.

Draw an arrow from glucose to glycolysis

Where did this glucose come from!?!
GLYCOLYSIS
occurs in cytoplasm
PYRUVIC ACID
(ETC)
Location:
(Krebs Cycle)
Location:
CELLULAR RESPIRATION
 Glycolysis

2. Glucose is broken down into pyruvic
acid (pyruvate).


Draw an arrow from glycolysis to pyruvic acid
Pyruvic acid is used to activate the Krebs
cycle

Draw an arrow from pyruvic acid to the Krebs
cycle
GLYCOLYSIS
occurs in cytoplasm
PYRUVIC ACID
(ETC)
Location:
(Krebs Cycle)
Location:
CELLULAR RESPIRATION
 Glycolysis

3. NADH is made and is used to activate
the electron transport chain.
Draw an arrow from glycolysis to NADH
 Draw an arrow from NADH to ETC circle

GLYCOLYSIS
occurs in cytoplasm
PYRUVIC ACID
(ETC)
Location:
(Krebs Cycle)
Location:
CELLULAR RESPIRATION
 Glycolysis

4. 2 ATP are produced from glycolysis.
Color ATP orange
 Draw an arrow from glycolysis to ATP

GLYCOLYSIS
occurs in cytoplasm
PYRUVIC ACID
(ETC)
Location:
(Krebs Cycle)
Location:
CELLULAR RESPIRATION
 Citric


Acid Cycle (Krebs Cycle)
Write this title above “Krebs Cycle”
Location: Occurs in the matrix of the
mitochondria
GLYCOLYSIS
occurs in cytoplasm
PYRUVIC ACID
(ETC)
Location:
Citric Acid Cycle
(Krebs Cycle)
Location:
Mitochondria Matrix
CELLULAR RESPIRATION
 Citric

Acid Cycle (Krebs Cycle)
1. Pyruvic Acid enters the mitochondria
and activates the Citric Acid Cycle.

Draw an arrow from Pyruvic Acid to the Citric
Acid Cycle
GLYCOLYSIS
occurs in cytoplasm
PYRUVIC ACID
(ETC)
Location:
Citric Acid Cycle
(Krebs Cycle)
Location:
Mitochondria Matrix
CELLULAR RESPIRATION
 Citric

Acid Cycle (Krebs Cycle)
2. Carbon dioxide is given off and leaves
the mitochondria.

Draw an arrow from Citric Acid Cycle to
Carbon Dioxide
GLYCOLYSIS
occurs in cytoplasm
PYRUVIC ACID
(ETC)
Location:
Citric Acid Cycle
(Krebs Cycle)
Location:
Mitochondria Matrix
CELLULAR RESPIRATION
 Citric

Acid Cycle (Krebs Cycle)
3. Energy carrying molecules NADH and
FADH2 are produced and used to
activate the Electron Transport Chain.
Draw an arrow from Citric Acid Cycle to NADH
and FADH2.
 Draw an arrow from NADH and FADH2 to the
ETC.

GLYCOLYSIS
occurs in cytoplasm
PYRUVIC ACID
(ETC)
Location:
Citric Acid Cycle
(Krebs Cycle)
Location:
Mitochondria Matrix
CELLULAR RESPIRATION
 Citric

Acid Cycle (Krebs Cycle)
3. 2 ATP are made as a result of the
Citric Acid Cycle.
Color ATP orange
 Draw an arrow from Citric Acid Cycle to ATP.

GLYCOLYSIS
occurs in cytoplasm
PYRUVIC ACID
(ETC)
Location:
Citric Acid Cycle
(Krebs Cycle)
Location:
Mitochondria Matrix
CELLULAR RESPIRATION
 Electron


Transport Chain (ETC)
Write the full name in the ETC circle
Location: Membrane of the mitochondria
GLYCOLYSIS
occurs in cytoplasm
PYRUVIC ACID
Electron Transport Chain
(ETC)
Location:
Mitochondria Membrane
Citric Acid Cycle
(Krebs Cycle)
Location:
Mitochondria Matrix
CELLULAR RESPIRATION
 Electron

Transport Chain (ETC)
1. NADH and FADH2 activate the ETC

Draw an arrow from NADH and FADH2 to
ETC
GLYCOLYSIS
occurs in cytoplasm
PYRUVIC ACID
Electron Transport Chain
(ETC)
Location:
Mitochondria Membrane
Citric Acid Cycle
(Krebs Cycle)
Location:
Mitochondria Matrix
CELLULAR RESPIRATION
 Electron

Transport Chain (ETC)
2. Oxygen enters into the mitochondria

Draw an arrow from Oxygen to ETC
GLYCOLYSIS
occurs in cytoplasm
PYRUVIC ACID
Electron Transport Chain
(ETC)
Location:
Mitochondria Membrane
Citric Acid Cycle
(Krebs Cycle)
Location:
Mitochondria Matrix
CELLULAR RESPIRATION
 Electron

Transport Chain (ETC)
3. Water is given off and leaves the
mitochondria
Color the water blue
 Draw an arrow from ETC to water

GLYCOLYSIS
occurs in cytoplasm
PYRUVIC ACID
Electron Transport Chain
(ETC)
Location:
Mitochondria Membrane
Citric Acid Cycle
(Krebs Cycle)
Location:
Mitochondria Matrix
CELLULAR RESPIRATION
 Electron

Transport Chain (ETC)
4. 34 ATP are produced in the ETC
Color ATP orange
 Draw an arrow from ETC to ATP

GLYCOLYSIS
occurs in cytoplasm
PYRUVIC ACID
Electron Transport Chain
(ETC)
Location:
Mitochondria Membrane
Citric Acid Cycle
(Krebs Cycle)
Location:
Mitochondria Matrix
CELLULAR RESPIRATION
 Generally
speaking, what ENTERS
the cell and is USED for cell
respiration?
 Glucose
and Oxygen
CELLULAR RESPIRATION
 Generally
speaking, what is
PRODUCED and LEAVES the
mitochondria as a result of cellular
respiration?
 Carbon
Dioxide, Water and ATP
CELLULAR RESPIRATION
 So
how would we write this as a word
equation?
Glucose + Oxygen  Carbon Dioxide + Water + ATP
CELLULAR RESPIRATION
 So
how would we write this as a chemical
equation?
C6H12O6 + 6O2 6CO2 + 6H2O + ATP
CELLULAR RESPIRATION
 What
do you notice about the chemical
equations for photosynthesis and cell
respiration???
6CO2 + 6H2O + light energy  C6H12O6 + 6O2
C6H12O6 + 6O2 6CO2 + 6H2O + ATP
CELLULAR RESPIRATION
 What
do you notice about the chemical
equations for photosynthesis and cell
respiration???
6CO2 + 6H2O + light energy  C6H12O6 + 6O2
C6H12O6 + 6O2 6CO2 + 6H2O + ATP
CELLULAR RESPIRATION
 How
many ATP are produced at each step
(Glycolysis, Krebs, ETC)??
 What
is the total # of ATP produced?
6CO2 + 6H2O + light energy  C6H12O6 + 6O2
C6H12O6 + 6O2 6CO2 + 6H2O + ATP