Biology A2 questions and anaerobic Page 56-61

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  • Created by: Fi Wil
  • Created on: 30-09-13 12:35
Where does the electron transport chain take place ?
Across the mitochondrial inner membrane
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What is the process of the electrons in the electron transport chain ?
1) The RED NAD & FAD allow the H+ to carry on the final step 2) the H+ Donate the electrons which carry onto the ETC, constant process of oxidation and reductions combining inorganic phosphate = ATP. rest released as heat.
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What is the process of H+ protons?
1) Protons actively transport across the inner membrane which then accumulate 2)This then gathers and then diffuse back over to mitochondrial matrix through stork particles releasing enzymes
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What is the final parts of the ECT?
1) After diffusion the H+ and electrons then combine with the terminal electron acceptor oxygen 2)This then forms the finl product water
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Why is the terminal electron acceptor important ?
This is very important because it would allow the respiration to be complete (aerobically) and the whole chain would accumalate come to a halt and reverse. This would stop the whole process and not carry on.
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What word can be used for the addition of phosphate molecules during ETC?
The word that can be used is oxidative phosphorylation as the electron carriers are being reduced as well as allowing the addition of an inorganic phosphate molecules.
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What are the stages are the processes in aerobic respiration and also what are they ?
Aerobic respiration- Glycolisis, Link reaction, Krebs cycle, ETC
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Where does substrate-level phosphorylation take place ?
This takes place within Glycolosis and the Krebs cycle.
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Where does oxidative phosphorylation take place ?
This takes place in the ETC, that then carries on the electrons from the carries of Reduced NAD & FAD
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What is the anaerobic respiration for yeast and some plant tissues?
This uses the reduced NAD from glycolisis as well as pyruvate, this then donates H+ ions to CO2 produced = NAD. Overall: Pyruvate + NAD red--> Ethanol + CO2 + NAD The addition of CO2 + H+ = ethanol
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What is the anaerobic respiration for animals/ eukaryote cells?
The animal cells would cease with the accumliation of NAD red, so the pyruvate gets rid of it, by taking the H+ (Due to oxygen debt) Pyruvate + Red NAD --> Lactate + NAD
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What is lactate used for ?
The lactate is a mild poison to allow ache then to carry on to let people know of fatigue indicating an oxygen debt. The lactate over time must be changed back to pyruvate which then in turn can be oxidised to glycogen/ energy
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Card 2

Front

What is the process of the electrons in the electron transport chain ?

Back

1) The RED NAD & FAD allow the H+ to carry on the final step 2) the H+ Donate the electrons which carry onto the ETC, constant process of oxidation and reductions combining inorganic phosphate = ATP. rest released as heat.

Card 3

Front

What is the process of H+ protons?

Back

Preview of the front of card 3

Card 4

Front

What is the final parts of the ECT?

Back

Preview of the front of card 4

Card 5

Front

Why is the terminal electron acceptor important ?

Back

Preview of the front of card 5
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