Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
Name: _______Class key_______
Period: ________________________
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The Living Environment ’14-‘15
Mr. Murdoch
The Living Environment ’14-‘15
Mr. Murdoch
Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
Topic 8.3 assignments
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Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
The Living Environment ’14-‘15
Mr. Murdoch
Cellular Respiration
Topic:
Objective: Describe the basic process of cellular respiration.
 Harvesting energy stored in food
o Cellular _respiration_
o breaking down food __to__ produce ____ATP____
o in _mitochondria_
o ____when___using __oxygen__
 “__aerobic__” respiration
o ___usually___digesting ___glucose___, but could be
____other___sugars, ____fats____, or ____proteins___
glucose + oxygen  energy + carbon dioxide + water
_C6H12O6_ + __6 O2__  __ATP__ + __6 CO2__ + __6 H2O__
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Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
Topic:
The Living Environment ’14-‘15
Mr. Murdoch
The Mitochondria
Objective: What do we need to make energy?
 The “_powerhouse_” for making energy
o _mitochondria_
 Fuel
o food: _carbohydrates_, __fats__, __proteins__
 Helpers
o __oxygen__
o __enzymes__
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The Living Environment ’14-‘15
Mr. Murdoch
Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
The Mitochondria
Topic:
Objective: What do we need to make energy?
 Product
o ___ATP___
 ___waste___products
o ___carbon___ __dioxide__
 then ____used____by ___plants___
o ___water___
 transpiration
Mitochondria are everywhere!!
animal cells
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plant cells
Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
The Living Environment ’14-‘15
Mr. Murdoch
ATP and work
Topic:
Objective: How are we using ATP to do work?
 ___can’t___ store ATP
o too __unstable__
o ____only____used in the ____cell____that
____made____each ATP
o ____ATP____is only ___short___term energy
 _carbohydrates_& ___fats___are
____long____term energy storage
 A working muscle __recycle__over 10 million
____ATPs____per second.
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Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
Topic:
The Living Environment ’14-‘15
Mr. Murdoch
Cellular Energy Budget
Objective: Describe a Body’s Energy Budget.
1. Make energy
o energy ___needed___, even at ____rest____
o __activity__, temperature ___control___
2. Synthesis
o ___growth___, _reproduction_, __repair__
3. Storage
o __glycogen__(animal starch), ____fat____
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Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
Topic:
The Living Environment ’14-‘15
Mr. Murdoch
Cellular Respiration
Objective: Describe the two basic steps in cellular respiration.
 Cellular Respiration
1. The ___first___stage, __glycolysis__, is __anaerobic__—no
oxygen is required.
2. The ____last____two stages are __aerobic__and require
___oxygen___to be completed.
SUMMARY EQUATION:
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Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
Name: ________________
The Living Environment ’14-‘15
Mr. Murdoch
Period: ____________________
Carefully remove this sheet from your packet to hand in.
Work silently and alone to complete this graded exercise.
Check for Understanding
1. Where does cellular respiration occur in the cell?
2. Name one reactant and one product of cellular respiration.
3. Explain why plants do/ do not have mitochondria.
4. Where does the cell store adenosine triphosphate longterm?
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Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
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The Living Environment ’14-‘15
Mr. Murdoch
Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
Topic:
The Living Environment ’14-‘15
Mr. Murdoch
Cellular Respiration
Objective: Describe the 3 main stages in cellular respiration.
 STAGES OF CELLULAR RESPIRATION
o Respiration occurs in ___three___main ___stages___
1. __glycolysis__
2. ___Krebs___ ___cycle___
3. __electron__ __transport__ ___chain___
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Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
The Living Environment ’14-‘15
Mr. Murdoch
Glycolysis Stage
Topic:
Objective: Describe the glycolysis stage in cellular respiration.
 __Glycolysis__[Glyco=sweet, sugar; lysis = to split] ≡ a series
of chemical ___reactions___in the __cytoplasm__of a cell
that ___breaks___down ___sugars___, a six-carbon
compound, ____into____two molecules of ___pyruvic___
____acid____, a three-carbon compound.
o __produces__only ___two___ ____ATP____molecules
for each ___glucose___molecule broken down. (4-2=2)
o _two_molecules of ___NADH___are __produced__.
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Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
The Living Environment ’14-‘15
Mr. Murdoch
Transition Phase
Topic:
Objective: Describe the action of Pyruvic Acid in respiration.
 __Transition__Phase
o ___before___citric acid ___cycle___and electron
transport ___chain___can begin, ___pyruvic___acid
__undergoes__a series of ___reaction___in which it
___gives___off a molecule of ____CO2____and
___combines___with a molecule called coenzyme A to
____form____ acetyl-CoA.
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Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
The Living Environment ’14-‘15
Mr. Murdoch
Citric Acid Stage
Topic:
Objective: Describe the citric acid stage in respiration.
 The ___citric___acid ___cycle___≡ (also called the
___Krebs___cycle) is a series of chemical ___reactions___in
that the __molecule__used in the _beginning_reaction is
____also____one of the end __products__.
o For ____every____turn of the ___cycle___,
____one_____molecule of _____ATP____and
____two_____molecules of _____CO2____, 3
____NADH____, & 1 ___FADH2___are produced.
o Makes a total of 2 ____ATP____,6 ___NADH___,& 2
___FADH2___
o Occurs _____in_____mitochondrial ___matrix___.
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Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
Topic:
The Living Environment ’14-‘15
Mr. Murdoch
Citric Acid Stage
Objective: Describe the citric acid stage in respiration.
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Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
The Living Environment ’14-‘15
Mr. Murdoch
Topic: Electron Transport Chain
Objective: Describe the electron transport chain stage.
 In the ___electron___transport ___chain___(ETC), the
___carrier___molecules ____NADH____and
___FADH2___give up ___electrons___that pass through a
series of reactions. Oxygen is the final electron acceptor
___making___ ___water___.
o This sets up a _____H+_____ (proton) ___gradient___
o Allow the ___protons___to flow through ATP synthase
which _synthesizes_ATP (ADP + Pi = ____ATP____)
o the ETC _adds_ __32__ATP molecules _____to_____the
____four____already __produced__during
__glycolysis__& ___citric___acid cycle
 ETC occurs __in__ the inner mitochondrial __membrane__.
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Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
The Living Environment ’14-‘15
Mr. Murdoch
Topic: Electron Transport Chain
Objective: Describe the electron transport chain stage.
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Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
Notes page:
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The Living Environment ’14-‘15
Mr. Murdoch
The Living Environment ’14-‘15
Mr. Murdoch
Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
Name: ________________
Period: ____________________
Carefully remove this sheet from your packet to hand in.
Work silently and alone to complete this graded exercise.
Check for Understanding
1. Where does glycolysis occur in the cell?
2. How many ATP are made by glycolysis and the Krebs Cycle?
3. Where are FADH & NADH2 produced in the respiration cycle?
4. How many total ATP are formed during one complete cycle?
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Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
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The Living Environment ’14-‘15
Mr. Murdoch
Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
The Living Environment ’14-‘15
Mr. Murdoch
Topic: Anaerobic Respiration
Objective: Describe the respiration without oxygen present.
 What if ___oxygen___is ___missing___?
o When _____no_____(or ___little___)
___oxygen___available in the environment = the cell
____can’t____complete ___aerobic___respiration.
 __Anaerobic__respiration
o also known as __fermentation__
 ___alcohol___fermentation
 ___lactic___ ____acid____fermentation
o _no_oxygen or _no_mitochondria (bacteria & Archaea)
o can ____only____make very ___few___ATP molecules
o ___large___animals ____can’t____survive
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Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
The Living Environment ’14-‘15
Mr. Murdoch
Topic: Anaerobic Respiration
Objective: Describe anaerobic alcoholic fermentation.
 ___alcohol___fermentation
o yeast
o ___glucose___ __ATP__+ __CO2__+ ___alcohol___
o make beer, wine, bread
o used by ___yeast___cells and some __bacteria__to
produce ____CO2____and ethyl __alcohol__ (EtOH).
_glucose_ _2 Py acid_ _2 ATP_
____glycolysis____
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_2 EtOH_ + _2 CO2_
__fermentation__
Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
The Living Environment ’14-‘15
Mr. Murdoch
Topic: Anaerobic Respiration
Objective: Describe anaerobic lactic acid fermentation.
 ___lactic___ ____acid____fermentation
o __bacteria__, ___animals___
o ___glucose___ _ATP_+ ___lactic___ ____acid____
o __bacteria__make ___yogurt___
o ___animals___feel muscle ___fatigue___
o feel the “____burn____”
o used to make ___cheese___and yogurt
o during strenuous ___exercise___not enough oxygen
from blood ___creates___an “__oxygen__ __debt__”
o ___lactic___acid __accumulates__in muscle; leads to
___fatigue___and ____pain____
o will be __converted__back to pyruvic acid in ___liver___
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Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
The Living Environment ’14-‘15
Mr. Murdoch
Topic: Anaerobic Respiration
Objective: Describe anaerobic lactic acid fermentation.
_glucose_ _2 Py acid_  _2 ATP_
__glycolysis__
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_ 2 lactic _ _ acid _
__fermentation__
Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
Topic:
The Living Environment ’14-‘15
Mr. Murdoch
Photosynthesis vs. Respiration
Objective: Compare & Contrast Photosynthesis & Respiration
Photosynthesis:
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Cellular Respiration:
Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
Notes page:
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The Living Environment ’14-‘15
Mr. Murdoch
Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
Name: ________________
The Living Environment ’14-‘15
Mr. Murdoch
Period: ____________________
Carefully remove this sheet from your packet to hand in.
Work silently and alone to complete this graded exercise.
Check for Understanding
1. What types of organisms may use anaerobic respiration?
2. Name one reactant and one product of alcohol fermentation.
3. Name one reactant and one product of lactic acid
fermentation.
4. Why do you think large animals need aerobic respiration?
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Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
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The Living Environment ’14-‘15
Mr. Murdoch
Unit 2 The Cell –Topic 8.3: Cellular Respiration-class key
Notes page:
Website upload 2014
The Living Environment ’14-‘15
Mr. Murdoch