Download Notes: Cellular Respiration

11/6/2013
What are the 2 parts of light reactions?
What goes into the light reactions?
What comes out?
What is the process called that makes ATP?
▪ What enzyme is used?
In the Calvin Cycle:
What goes in?
What comes out?
What powers the Calvin Cycle?
Cellular
Respiration
-Process where cells make ATP
by breaking down organic
compounds (such as glucose)
-Autotrophs and heterotrophs
both undergo respiration
Every time you move a muscle, think,
breathe, replicate your DNA, every time
your heart beats - you use ATP to do this
work!
-Occurs in the cytoplasm
and mitochondria
How is this
equation different
from
photosynthesis?
Overall equation:
C6H12O6 + 6O2
6CO2 + 6 H2O + ATP
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Aerobic Pathways
take place in the
presence of
oxygen
Anaerobic
Pathways take
place in the
absence of oxygen
Both pathways: 1) Begin with Glycolysis
2) Produce a Pyruvic Acid Intermediate
3) Differ in ATP production and final product
If an organism lived in an O2 deficient environment
it would undergo the _____________ pathway.
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•Location: Cytosol (cytoplasm)
•Description
•6 carbon molecule of glucose is split
•Anaerobic (no oxygen needed)
If oxygen is present then Aerobic respiration
occurs
If oxygen is not available then cells continue
to perform glycolysis to make 2 ATPs
•Reactant: C6H12O6 (glucose)
•Products: 2 Pyruvic Acids (3-carbon molecule) & 2 ATP
•The pyruvic acid will enter mitochondria for further
processing
Krebs Cycle:
• Series of reactions
that occur in
mitochondrial
matrix
•
Reactants: Pyruvic
acid (from
glycolysis)
•
Products: 2 CO2
and 2 ATP
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The Krebs Cycle begins with pyruvic acid which
was produced by ______________.
The Krebs cycle occurs in the
__________________ _____________.
Write the chemical equation for Cellular
Respiration.
Both Symbolically and In English
Glycolysis:
Where does it take place?
What are the reactants? the products?
Does it require oxygen?
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Krebs Cycle:
• Series of reactions
that occur in
mitochondrial
matrix
•
•
•
•
•
Reactants: Pyruvic
acid (from
glycolysis)
•
Products: 2 CO2
and 2 ATP
The “big ATP payoff”
Location: cristae (inner membrane) of mitochondria
Reactants: O2
Products: H2O, 34 ATP
3. e- are transferred down the ETC.
4. Energy released by this transfer pump H+ from the matrix
to inter-membrane space.
5. O2 accepts the e- at
the end of the ETC
making H2O.
This build up of protons
create a mini battery
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6. The only exit for these protons is through ATP
synthase.
7. It spins providing energy for converting ADP into
ATP
This process is called
chemiosmosis
Total Energy Production: 36 ATP
H2O
__________
is produced at the end of the
electron transport chain in the mitochondria
Chemiosmosis is the process responsible for
______________
producing the ATP
___________
accepts the electron to make
Oxygen
water at the end of the ETC
2 ATP from glycolysis
2 ATP from Kreb’s Cycle
34 ATP from ETC
(chemiosmosis)
38 ATP Made In Total
- 2 ATP for transporting
pyruvic acid into the
Mitochondria from Glycolysis
36 Net ATP Made
Aerobic Respiration is 20
times more efficient than
Glycolysis alone.
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Anaerobic pathway (fermentation) =
Glycolysis 2 ATP
Aerobic Pathway = Glycolysis + Kreb’s Cycle +
ETC 36 ATP
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Fact
Fact: Our bodies uses ATP at the rate of
about 1 million molecules per cell per
second.
Classwork: Cell Respiration Diagram,
Homework: Make 2 Thinking Maps
Double Bubbles
There are more than 100 trillion cells in
the human body. That’s about
100,000,000,000,000,000,000 ATP
molecules used in your body each
second!
Homework: Cell Respiration Steps,
▪ Cellular Respiration vs. Photosynthesis
▪ Aerobic Respiration vs. Anaerobic Respiration
(Glycolysis)
Intervention
Wednesday 2:45-3:30 pm & Thursday 6:50-7:35 am
Discovery Education
Cell resp and Glycolysis
From food to ATP
Intervention
Wednesday 2:45-3:30 pm & Thursday 6:50-7:35 am
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Process
Location
Reactants Products
# of ATP
Made
Glycolysis
Kreb’s
Cycle
Electron
Transport
Chain
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