Respiration

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  • Created by: Jess
  • Created on: 15-12-13 14:03
Where does glycolysis occur?
Cytoplasm
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Where does the link reaction occur?
The matrix
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Where does the krebs cycle occur?
The matrix
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Where does oxidative phosphorylation occur?
The cristae
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How is the mitochondria adapted to its function?
1. Cristae is folded, larger surface area, maximise respiration 2. lots of ATP synthase to produce lots of ATP
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Describe what happens in the link reaction
Pyruvate is decaroxylated and relseases c02. NAD is reduced converting pyruvate to acetate. Coenzyme A reacts with acetate to form acetyl CoA
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How many times does decarboxylation occur in the krebs cycle?
3 times, two NADH and one FADH
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What do electrons lose as they move along the electron transport chain?
They lose energy
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How many ATP is produced from one glucose molecule?
32
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Name five products of the Krebs cycle?
C02, NADH, FADH, ATP, Coenzyme A
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What is the last electron acceptor in Oxidative phosphorylation
oxygen
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Name three pieces of evidence for chemiosmosis
1. PH 2. no electron transport 3. Chemicals
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Describe the low PH theory
A lower PH in the intermembrane space compared to the matrix. Indicates protons are being actively moved via a proton gradient
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Describe the electron transport theory
mitochondria can produce ATP even when there is no electron transport taking place, indicating a proton gradient instead. The outer membrane is permeable, protons move in
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Describe the chemical theory
Chemicals prevent H+ ions moving across the membrane, also stopping ATP production proving the build up of a H+ gradient not the electron transport
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what happens during lactate fermentation
Latate is produced from pyruvate. The reduced NAD transports hudrogen to pyruvate to form lactate and NAD. The NAD is then reused in glycolysis
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What happens during alcoholic fermentation
The CO2 is removed from pyruvate to form ethanal. The reduced NAD transfers H+ to ethanal to from NAD and ethanol. The NAD is then reused
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Why does Aerobic respiration produce as much energy
1. the membrane is leaky 2. ATP is used up actively transporting 3. Reduced NAD is used in other reactions
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Other cards in this set

Card 2

Front

Where does the link reaction occur?

Back

The matrix

Card 3

Front

Where does the krebs cycle occur?

Back

Preview of the front of card 3

Card 4

Front

Where does oxidative phosphorylation occur?

Back

Preview of the front of card 4

Card 5

Front

How is the mitochondria adapted to its function?

Back

Preview of the front of card 5
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