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15 Cards in this Set
- Front
- Back
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Compare and contrast aerobic and anaerobic respiration. |
Both processes include glycolysis, the citric acid cycle, and oxidative phosphorylation. in aerobic respiration, the final electron acceptor is molecular oxygen; in anaerobic, the final electron acceptor is a different (sulfate, nitrate, sulfur) |
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if the following redox reaction occurred, which compound would be oxidized? which reduced? C4 H6 O5 + NAD+ >>> C4 H4 O5 + NADH + H+ |
C4 H6 O5 will be oxidized NAD+ reduced. |
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during the redox reaction in glycolysis, which molecule acts as the oxidizing agent? |
NAD+ acts as the oxidizing agent, accepting electrons from glyceraldehyde 3-phosphate, which thus acts as the reducing agent |
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name the molecules that conserve most of the energy from the citric acid cycle's redox reactions. how is this energy converted to a form that can be used to make ATP. |
NADH and FADH2; they will donate electrons to the electron transport chain. |
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what process in your cells produce CO2 that you exhale? |
CO2 is released from the pyruvate that is the end product of glycolysis, and CO2 is also released during the citric acid cycle. |
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what effect would an absence of O2 have on Oxidative phosphorylation ? |
Oxidative phosphorylation would eventually stop entirely, resulting in no ATP production by this process. without oxygen to "pull" electrons down the electron transport chain, H+ would not be pumped into the mitochondrions inter membrane space and chemiosmosis would not occur |
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membranes must be fluid in order to function properly, how does the operation of the electron transport chain support this assertion? |
one of the components of the electron transport chain, ubiquinone (Q), must be able to diffuse within the membrane, it could not do so if the membrane were locked rigidly into place. |
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consider NADH formed during glycolysis. what is the final acceptor for its electrons during fermentation, and aerobic respiration? |
a derivative of pyruvate, such as acetaldehyde during fermentation, or pyruvate itself during lactic acid fermentation; oxygen during aerobic respiration |
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the immediate energy source that drives ATP synthesis by ATP synthase during oxidative phosphorylation is the ... |
transfer of phosphate to ADP |
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which metabolic pathway is common to both fermentation and cellular respiration of a glucose molecule? |
Glycolysis |
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in mitochondria, exergonic redox reactions |
provide the energy that establishes the proton gradient |
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the final electron acceptor of the electron transport chain that functions in aerobic oxidative phosphorylation is ? |
oxygen |
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what is the oxidizing agent in the following reaction? Pyruvate + NADH + H+ >>> Lactate + NAD+ |
Pyruvate |
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when electrons flow along the electron transport chains of mitochondria, which of the following changes occurs? |
the pH of the matrix increases |
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most CO2 from catabolism is released during |
the citric acid cycle |
