Date: January 4, 2016
Aim #38: How do our cells carry out aerobic cellular
respiration?
Do Now: Warm-Up Notebook
Date
Title of Activity
Page #
1/4
Concept: Photosynthesis & Respiration
70
HW:
1) Cornell Notes Chapter 9-1 (Chemical Pathways) pages 221225
2) Quest- Respiration (60 point test)- next Tuesday (period 5),
Wednesday (period 1&7)
3) Plant Packet (follow calendar of suggested deadlines!!)
Date: January 5, 2016
Aim #38: How do our cells carry out aerobic cellular
respiration?
Do Now: Warm-Up Notebook
Date
Title of Activity
1/5
Overview of Respiration
Page #
71
HW:
1) Cornell Notes Chapter 9-1 (Chemical Pathways) pages 221225 due Wednesday
2) Quest- Respiration (60 point test)- next Tuesday (period 5),
Wednesday (period 1&7)
3) Plant Packet (follow calendar of suggested deadlines!!)
Crash Course
ATP & Cellular Respiration
https://www.youtube.com/watch?v=00jbG_cfGuQ
Aim #38: How do our cells carry out
aerobic cellular respiration?
1) What is the formula for cellular
respiration?
C6H12O6 + 6O2  6CO2 + 6H2O + 38ATP
2) Let’s not forget the Big Picture:
ATP
P
P
+
+
Energy + ADP + Energy
Cell Respiration
Cell Activities
3) Cell Respiration Involves OxidationReduction Reactions
This involves the transfer of H+ ions and electrons
from one compound to another
Every time H+ and its electrons are transferred,
energy is also transferred
Oxidation-Reduction Reactions
4) Oxidation vs. Reduction
Oxidation:
Reduction:
1)A process that
releases energy
1)A process that consumes
energy
2)An atom loses electrons
2) An atom gains electrons
3) A substance loses
H+
4)LEO- lose electrons
oxidation
3) A substance gains H+
4) GER- gain electrons
reduction
NAD+ & FAD+
In cells, there are special compounds that help carry
Hydrogen and their electrons from one
compound to another.
**The Hydrogen and electrons are both sources of
energy.
These structures help enzymes work, so they are
known as coenzymes
5) What is NAD+ and NADH?
Compounds transfer electrons and Hydrogens to
NAD+ during cell respiration forming NADH.
NADH will be utilized later on in cellular respiration
to create more ATP molecules
Cell Respiration & Burning are types of
Oxidation
ENERGY
1)Single reaction
2)Occurs at high temps.
3)No enzymes required
4)Aerobic- must have O2
1)Series of reactions
2)Occurs at body temp
3)Involves enzymes
4)May be aerobic or
anaerobic
6) Structure of the Mitochondria
1) 2 Membranes (inner
& outer)
2)Matrix- thick fluid on
the inside of the inner
Membrane
3) Intermembrane
Space- the space
between the 2
membranes.
** Many of the enzymes & other molecules are involved
in respiration are built into the inner membrane.
Date: January 6, 2016
Aim #38: How do our cells carry out aerobic cellular
respiration?
Do Now: Warm-Up Notebook
Date
Title of Activity
1/6
The Mitochondria
1/6
Glycolysis
**2 Warm-Ups Today**
Page #
72
73
HW:
1) Cornell Notes Chapter 9-2 (Krebs Cycle & ETC) pages 226-232 due
Friday
2) Quest- Respiration (60 point test)- next Tuesday (period 5),
Wednesday (period 1&7)
3) Plant Packet (follow calendar of suggested deadlines!!)
The Steps of Aerobic Cellular Respiration
1. Glycolysis (same as anaerobic respiration)
2. Acetyl CoA Formation
3. Krebs Cycle
4. Electron Transport Chain (ETC)
7) Stage 1: Glycolysis
Glucose + 2ATP + 2NAD+  2 Pyruvate + 2NADH + 4ATP
Where does Glycolysis
take place?
Cytoplasm
Stage 1: Glycolysis
Glucose + 2ATP + 2NAD+  2 Pyruvate + 2NADH + 4ATP
3 Carbon
Pyruvate
6 Carbon
Structure
** Initial investment of energy
to break Glucose (2 ATP)
3 Carbon
Pyruvate
Glycolysis Summary:
1)It takes place in the cytoplasm
2)It requires an input of 2 ATP molecules
3)It creates 4 ATP molecules (net gain of 2)
4)It creates two NADH molecules
5) The 2 pyruvates still hold most of the energy
of the original glucose molecule
6) It does not require oxygen!!!!!
8) Stage 2: Acetyl CoA Formation
• takes place in the Matrix of the
mitochondria
• Pyruvate created during glycolysis
now diffuses into the mitochondrion.
• It will now be converted into a twocarbon compound called Acetyl CoA
• Continuing the oxidation of the
organic molecule
Pyruvate + CoA+ NAD+  Acetyl CoA + 2NADH + 2CO2
Stage 2: Acetyl CoA Formation
9) Stage 3: Krebs Cycle
• Takes place in the matrix of
mitochondria
• AKA: citric acid cycle
• Acetyl CoA created during step 2
now enters the Krebs Cycle
• Complete oxidation of the organic
molecule to carbon dioxide
2 Acetyl-CoA  4 CO2 + 6NADH + 2FADH2 + 2 ATP
Summary of Krebs Cycle:
1)Takes place in the mitochondrial matrix
2) Produces 6 NADH molecules
3)Produces 2 FADH2 molecules
4) Produces 4 CO2
5) Each glucose molecule sends 2 acetyl-CoA
through the cycle
6) Produces only 2 ATP molecules for each glucose
10) Stage 4: Electron Transport Chain
Takes place on inner folds of
mitochondria (cristae)
NADH & FADH2 are electron
carriers which transfer their
electrons to a succession of
membrane proteins on the inner
membrane of the mitochondria
NADH  3ATPs
FADH2  2ATPs
Cytochromes
This process releases energy
and helps form ATP molecules
Stage 4: Electron Transport Chain
** Notice that the final
acceptor of the electrons
& Hydrogen is Oxygen.
Oxygen is a very strong
“electron grabber”
Hydrogen ions (H+) then
combine with the negative
charged oxygen atoms to
form water
** This process produces 34 ATP molecules
11) Oxidative Phosphorylation:
• AKA chemiosmosis
• Actual mechanism by which ATP is
produced
• It uses the energy stored in the proton
gradient to power the synthesis of
ATP
• Depends on enzyme ATP synthetase
• As protons move through the ATP
synthetase channel, part of the
molecule turns and attaches
phosphates to ADP molecules,
forming molecules of ATP.
Summary of Cellular Respiration
Summary of Cell Respiration:
Stage
Location
Products
Glycolysis
Cytoplasm
Acetyl CoA
Formation
Mitochondrial
Matrix
Mitochondrial
Matrix
4 ATP (2 Net),
2 NADH,
2 pyruvate
2 NADH,
2 CO2
2 ATP,
6 NADH,
2 FADH2, 4CO2
34 ATP, H2O
Krebs Cycle
ETC / OP
Inner
Membrane
Aerobic Total Energy Gain
• Glycolysis:
2
ATP
• Pyruvic Acid
Breakdown:
0
ATP
• Kreb’s Cycle:
2
ATP
• Electron Transport
Chain:
• Total:
34 ATP
38 ATP
Aerobic Cellular Respiration
General Summary
Energy
Materials used
Materials
produced
Time frame
Location
Importance
Chemical bonds in glucose  ATP
Glucose, oxygen, water
ATP, carbon dioxide, and water
24/7
Mitochondria
Provides energy for life functions
Amoeba Sisters
Cellular Respiration & Mighty Mitochondria
https://www.youtube.com/watch?v=4Eo7JtRA7lg