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Cell Respiration Edition
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Krebs CycleKrebs Cycle ETCETCSargent’sSargent’s
choicechoiceFermentationFermentationGlycolysisGlycolysisEnergyEnergy
BiologyBiology
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A: In this type of reaction, energy is released. (Combustion and Respiration can be classified as this type.)
$100$100Q: What is exothermic?
(Since the reaction is “downhill” overall, the products end up w/less energy and energy is released.)
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A: How do you calculate the calorie content of a snack food?
(Hint: how do you calculate heat gained by water?)
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Q: What is H=m x C x Δt?
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A: In this type of reaction the products have more PE than the reactants.
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Q: What is an endothermic reaction?(Since the products have more PE, energy had to be
absorbed in this reaction, it’s “uphill” overall.)
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A:A: The reaction that would directly supply
energy to a cell for cellular work.
1. ADP + P ATP
2. C6H12O6 + O2 CO2 + H2O
3. ATP ADP + P
4. CO2 + H2O C6H12O6 + O2
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Q: What is Reaction 3?(ATP ADP + P, the removal of a phosphate
group releases energy)
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A: The pathway in aerobic respiration that transfers the most energy to ATP molecules.
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Q: What is the Electron Transport Chain?
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A: The 6-Carbon molecule that is the reactant that begins the series of reactions of this pathway.
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Q: What is glucose?
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A: The net yield of ATP from the reactions during glycolysis.
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Q: What is 2 ATP?
http://www.supplementsuk.co.uk/gfx/cartoon_muscle.gif
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A: This end-product of glycolysis contains most of the PE that was originally in glucose.
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Q: What is pyruvic acid?
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A: If oxygen is not available to a cell, this pathway follows glycolysis.
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Q: What is fermentation?
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A: If oxygen is available to a cell, the end-product of glycolysis must first be converted to this molecule before the next pathway begins.
Image from http://www.i-claudius.com/cartoons/scrapbook02.html
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Q: What is acetyl-CoA?
$100$100A: This molecule binds with acetyl-
CoA to begin the Krebs cycle.
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Q: What is oxaloacetic acid?
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A: The yield of ATP molecules from two rounds of the Krebs cycle.
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Q: What is 2 ATP?
(Remember, the Krebs cycle occurs 2x because 2 acetyl-CoA molecules are formed from the conversion of 2 pyruvic acid molecules.)
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A: These molecules are released from the cell following the complete breakdown of a glucose molecule that is completed during the Krebs cycle.
(i.e.: these molecules contain the carbon atoms that were originally in glucose.)
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Q: What are carbon dioxide molecules?
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A: Since little ATP is formed during the Krebs cycle, most of the energy originally in glucose is transferred to molecules of _______ during the Krebs cycle.
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Q: What are molecules of NADH?
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A: The Krebs cycle is the first stage of this type of respiration.
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Q: What is aerobic respiration?
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A: The reactions of the ETC occur along the inner membrane of this organelle.
http://www.sem.com/microsco/micrimag.htm
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Q: What is the mitochondrion?
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A: These macromolecules make up the ETC.
$200$200Q: What are proteins?
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A: The energy from electrons moving down the ETC is used to pump these particles into the outer compartment.
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Q: What are hydrogen ions (protons)?
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A: The name of the specialized protein that uses energy from the diffusion of H+ to synthesize ATP.
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Q: What is ATP synthase?
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A: The yield of ATP from the ETC.
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Q: What is 34 ATP?
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A: Fermentation is also called anaeorobic respiration because it occurs if this molecule is not present.
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Q: What is oxygen?
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A: The number of ATP produced per glucose molecule if a cell is undergoing fermentation.
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A: What is 2 ATP
(This is the number produced in glycolysis.)
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A: The location of fermentation in a cell.
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Q: What is the cytoplasm?
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A: Fermentation produces either ethyl alcohol or this molecule.
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Q: What is lactic acid?
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glycolysis during fermentation are important because, even though no more ATP is produced, the reaction(s) regenerates this molecule.
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Q: What is NAD+?
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A: The total number of ATP produced per glucose molecule during aerobic respiration.
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Q: What is 38?
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A: These organisms do both respiration and photosynthesis.
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Q: What are autotrophs?
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A: The type of cell in humans where fermentation would likely take place during strenuous exercise.
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Q: What is a muscle cell?
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A: Besides glucose, what is the other reactant of aerobic respiration (in the summary equation)?
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Q: What is oxygen?
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A: The two products of aerobic respiration (in the summary equation).
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Q: What are carbon dioxide and water?
