cell respirationc
TRANSCRIPT
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Monday 17 October
Topic: Cellular Respiration
DO NOW:
• Brainstorm everything that you can about energy.
Think about things such as where it comes from, how it
becomes available, how does it change into other forms,
what is it used for, what types there are, etc.
HW:
• 8-1 Reading for Understanding
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Objective
By the end of this class, you will be able
to write the chemical equation for cell
respiration and identify its reactants and
products.
Agenda
Notes on cell respiration
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Why do we need energy?
So we can reproduce
So we can move around
So we can interact with surroundings
So our cells can function
Thinking
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In what form is energy available?
Glucose
Proteins, carbohydrates
Food
Solar
Electric, water, chemical
Wind, lithium ,nuclear,
maltose
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How does our body convert this
energy? ENERGY MUST BE IN CHEMICAL
FORM FOR US TO USE IT!!!!!!!!
ATP (adenosine tri phosphate),
Mitochondria makes ATP (through
metabolism)
Oxygen and glucose are converted into
energy and waste
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Where do the waste products go?
2 waste products
Carbon dioxide (exhale)
Water (urinate, sweating, exhale)
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THE FORMULA!!!
O2 + C6H12O6ATP + H2O + CO2 + heat
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Tuesday 18 October
Topic: Exercise, Cell Respiration, and
your body
DO NOW:
• Pick up a packet from the kidney table and complete the
front page (“pre-lab”). You should fill in the blanks and
write hypotheses for how exercise affects the body.
• Jhon will come around and collect the 8-1 reading hw
quickly and quietly
HW:
• Reflections and conclusions questions
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Objective
Explain how the chemical equation for
cell respiration relates to breathing, and
why we breathe harder during exercise.
Agenda
Protocol for outdoor activity
How to measure a pulse
Outside activity!
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Before going outside…
You only need to bring your lab and a pencil
and can leave everything else here
We go out the back stairs, out the door, and
around to the crosswalk
Line up with your partner along the edge of
the basketball court by the red stairs
Once everyone completes the activity, listen
for me to say “Now” and “End” which will be
the timed minute for pulse
Swap with your partner
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Now…
Take a seat, chill, start quietly writing your
answers
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Thursday 20 October
Topic: Burning food compared to
cellular respiration
DO NOW:
• Take a copy of today’s activity and complete the 3
pre-lab questions
• Have your hw out for collection
HW:
• Complete any lab questions that were not done
during class
• Study for tomorrow’s quiz (shorter)
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Objective
By the end of this class, you will be able
to identify 3 similarities and 3 differences
between burning food and cell respiration
by igniting a Frito chip.
Agenda Recap of outdoor activity
Silent reading
Lab protocol
Lab PART II (as a demo)
Lab part I (in groups)
Review for quiz tomorrow
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Outdoor activity recap
What are the key points to take away?
Exercises increase heart rate carries
oxygen to cells
Carbon dioxide from cells
Breathing rate increases to get more
oxygen to make more energy
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Silent reading
In order to best understand today’s lab
and to answer all the questions properly,
you will need additional information.
The last page of your lab packet was
copied from the text
Turn to it and read silently for 5 minutes
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Part II – Measuring the Calories in Food
calorie – amount of energy needed to raise
the temp of one gram of water by one
degree celsius
Calorie (aka kilocalorie) – 1000 calories
Quantitative Data:
Volume of water 100 mL = 100 grams
Starting temp of water: 22 celsius
Ending temp of water: 27 celsius
Change in temperature: 5 degrees
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Lab Protocol
All bags, extra papers, etc must be off the lab table
Any hair long enough is to be tied back
IMPERATIVE that people stay in their seats
Steps:◦ Secure the frito into the holder apparatus
◦ Have a cup of water ready to drop match into
◦ Once I see that all groups are ready, I will distribute a match to each group
◦ Light the frito FROM THE BOTTOM, drop the match into the water, observe the reaction and then fill in the table accordingly.
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Burning Food Cell Respiration
General
Observations
Chip becomes black/burnt DO NOT ANSWER
Starting materialsFrito chip, match, cup of water, paper
clip
Glucose and oxygen
Source of fuel
(energy source)
Carbs and lipids (fat) Glucose
End productsBurnt chip/ charcoal Carbon dioxide, water, heat and
ATP
Type(s) of energy
released
Heat energy ATP
Catalyst (what
triggers the reaction
to start)
Match Enzymes in the mitchondria
Number of separate
steps of the process
Three steps: prepare, light ,extinguish Three
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SIMILARITIES:
Require oxygen
Burn glucose
Produce heat
Convert one form
of energy to
another
DIFFERENCES:
• Cell respiration
produces water
• Cell respiration
produces ATP
• Burning produces
carbon monoxide
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Cell Respiration Review
With a partner, spend 15 minutes filling in
the study guide questions
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1. What is ATP and how is it used in
cells? ATP is chemical energy and is used to
power everything in the cell and the body.
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2. What is the purpose of cell
respiration? The purpose of cell respiration is to make
usable energy.
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3. Where does cell respiration
happen? It happens in the mitochondria.
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4. What are the starting materials and
end products for cell respiration? The starting materials are as follows:
Oxygen and Glucose
The products are:
Water, ATP, energy, carbon dioxide, and
heat.
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5. How is cell respiration similar to and
different from actually burning food?
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6. What is a calorie?
A calorie is one gram of water heated by
one degree Celsius.
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7. How does exercise influence cell
respiration? Why? It makes you need more glucose and
oxygen, and the rate of cell respiration
will increase.
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Friday 21 October
Topic: Cell Respiration Review & Quiz
DO NOW:
• Get a clicker from the kidney table
• Take out your notes on cell respiration
HW:
• Read 38-1 and take notes in your notebook
• Think of a food/meal that contains carbohydrates, lipids
(fats), and proteins. Write it down after your reading
notes!
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Objective
By the end of this class, you will be able
to apply knowledge of cellular respiration
to answer short-answer and open-
response questions on the quiz
Agenda
Cell respiration review
Quiz
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1. What do you call the starting
materials in a chemical equation?
A. B. C. D.
35%
19%
35%
12%
A. Products
B. Ingredients
C. Reactants
D. Starters
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2. What are the reactants in
cellular respiration?
A. B. C. D.
4%
48%
4%
44%
A. O2 and CO2
B. O2 and Glucose
C. Glucose and ATP
D. CO2, H2O, ATP, and
heat
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3. What are the products in
cellular respiration?
A. B. C. D.
0%
96%
0%4%
A. O2 and CO2
B. O2 and Glucose
C. Glucose and ATP
D. CO2, H2O, ATP, and
heat
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4. What is the purpose of cellular
respiration? Why is it important?
A. B. C. D.
15%12%
54%
19%
A. To help us breathe
B. To make glucose for
cells
C. To make ATP for
cells
D. To take in oxygen
and release carbon
dioxide
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5. The organelle where cell respiration
takes place is the
A. B. C. D. E. F.
0% 0% 0%
100%
0%0%
A. Nucleus
B. Lysosome
C. Chloroplast
D. Vacuole
E. Mitochondrion
F. Ribosome
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6. Why do some cells have more
mitochondria than other cells?
A. B. C. D.
64%
16%
4%
16%
A. The cells use more
energy
B. The cells store
more nutrients
C. The cells degrade
more proteins
D. The cells divide
more frequently
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7. A poison that prevents cell respiration in
mitochondria will affect the production of…
A. B. C. D.
44%
15%
22%19%
A. ATP
B. Glucose
C. Oxygen
D. RNA
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8. Choose the correct statement about
photosynthesis and cell respiration:
A. Both in same
organelle
B. Both happen in all
living things
C. P produces carbon
dioxide, and CR uses
carbon dioxide
D. P stores energy and
CR releases energy