Cellular
Respiration
BW
• If you were hiking up on Mt. Lemmon and
realized a mountain lion was stalking you (and
yes, there are mountain lions up there, which can
weigh up to 300 lbs and be 9 feet long), how
does oxygen from the air reach the muscles in
your legs, hopefully in time to get away from this
large predator that wants to eat you for lunch?
• Why do your leg muscles need oxygen?
In case you didn’t
believe me…
• I do NOT promote
hunting, but this
image shows how
big mountain lions
can get.
Announcements
• Upcoming Science Fair due dates
– 12/6 – Poster components
– 12/13 – Final poster
• If you weren’t here for the TEST yesterday
you need to come take it outside of class
time BEFORE THANKSGIVING.
Science Fair Update – On a half
sheet of paper.
• In 2 – 3 sentences, describe what you have
accomplished on your project so far – be
honest!!
• In 2 – 3 sentences, describe what you plan to
do in the next 2 weeks.
Write Conclusion over Thanksgiving Break- we
will be in computer lab typing on MONDAY.
Objective for the day
• By the end of class, you will be able to
diagram the inputs and outputs of cellular
respiration.
We all know that animals breathe…
• But do other organisms breathe as well?
• What is an example of another organism that
breathes?
Cellular
Respiration
All living
things
respire!
Respiration has two parts
• Breathing
• Cellular respiration
Essential Question
• Why do all living things respire?
Cellular Respiration Key Terms
1. C6H12O6
2. O2
3. CO2
4. ATP
5. Autotroph
6. Heterotroph
7. Cellular Respiration
8. Mitochondrion(a)
9. Cristae
10. matrix
11. glycolysis
12. Calvin Cycle
13. Krebs cycle
14. Electron Transport Chain
3 minutes = 180 seconds
1. Take out a piece of paper
and your notebook
2. Title the paper “Cellular
Respiration Key Terms” and
copy down the words on the
left, leaving a space after
each term.
3. Title your notes“Cellular
Respiration”.
4. On your slate, how many of
the 14 terms do you already
recognize? Try to define
some of them.
Put your key terms behind your
notebook for now…
…we will use them later
Take notes as needed in
your notebook
Autotrophs vs. Heterotrophs
• Autotrophs-One
They
make
own food.
makes
itstheir
own food,
other gets its energy
from eating
other
organisms,
• The
HeterotrophsThey must
get their
food
from
somewhere else.Which is which?
Which are we?
So we
(heterotrophs)
get our energy
from food, but
how?
Chemical Reactions
• We use chemical reactions to break down our
food.
• What are some other chemical reactions you
know about?
Volcano!
NaHCO3 + HC2H3O2 → CO2 + NaC2H3O2 + H2O
Reactants vs. Products
Reactants
Products
– what goes in
(to a chemical reaction)
– what comes out (of a chemical reaction)
THE Cellular Respiration
Reaction
REACTANTS
PRODUCTS
ATP = Adenosine TriPhosphate
• ATP is the energy carrier for the cell
Some Uses
Muscle Contraction
Endocytosis
DNA & Protein Synthesis
Cell-to-cell communication
Some Uses
Flashlights
Automatic Fish feeders
Remote controls
Clocks
Cellular Respiration
The release of chemical energy, from food, for use
by cells.
Where do all these chemicals come
from and go to? (Teams of 4)
•
•
•
•
•
Glucose – from food
Oxygen – from air
Water – goes where ever it wants
Carbon Dioxide – to air
Energy (ATP) – to cells
Mid-Closure
• Copy this equation into your notes (if you
haven’t already) and sketch where each input
comes from and where each output goes to.
• Then, use your notes to write short
summaries for as many of the key terms as
possible.
Cellular Respiration Basics
• The breakdown of glucose molecules to
release energy.
• Takes place in ALL living things.
• It occurs in three steps- Glycolysis, Krebs cycle,
and electron transport chain
The Molecules
Where do you think cell respiration occurs?
• Hint- what is the power house of the cell?
Make a BIG sketch in your notes
Cytosol = Cytoplasm
• Show Flash Videos:
– Cellular Respiration Overview
– Glycolysis
– Citric Acid Cycle
– Electron Transport Chain
Make a Table
Process
Glycolysis
Krebs Cycle
Electron
Transport Chain
& Oxidative
Phosphorylation
Lactic Acid
Fermentation
Alcoholic
Fermentation
Cell
Location
Reactants
Products
ATP
Produced