Coupling Quiz: Difference between revisions

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{The mechanism of cycling of cations across the mitochondrial inner membrane (mtIM), strongly stimulated by permeability transition (mtPT); comparable to the use of protonophores e.g. by UCP1 or cation (Ca2+) cycling, leads to: ย 
{LEAK state can be measured:
|type="()"}
|type="()"}
+ [[Charge number]] of O<sub>2</sub> = 4
- After addition of kinetically saturation doses of ADP.
|| The '''[[charge number]]''' of an ion or electrochemical reaction is the [[charge]] divided by the [[elementary charge]] of the ion or of electrons transferred in the reaction as defined in the reaction equation. ''z'' is a positive integer. ''z''<sub>B</sub> = ''Q''<sub>B</sub>ยท''e''<sup>-1</sup>; [[Cohen 2008 IUPAC Green Book]]
|| The '''[[charge number]]''' of an ion or electrochemical reaction is the [[charge]] divided by the [[elementary charge]] of the ion or of electrons transferred in the reaction as defined in the reaction equation. ''z'' is a positive integer. ''z''<sub>B</sub> = ''Q''<sub>B</sub>ยท''e''<sup>-1</sup>; [[Cohen 2008 IUPAC Green Book]]
- [[Atomic number]] of O<sub>2</sub> = 8
- After uncoupler titration.
|| Correct answer is the '''[[charge number]]'''. '''[[Charge number]]''' of an ion or electrochemical reaction is the [[charge]] divided by the [[elementary charge]] of the ion or of electrons transferred in the reaction as defined in the reaction equation. ''z'' is a positive integer. ''z''<sub>B</sub> = ''Q''<sub>B</sub>ยท''e''<sup>-1</sup>; [[Cohen 2008 IUPAC Green Book]]
|| Correct answer is the '''[[charge number]]'''. '''[[Charge number]]''' of an ion or electrochemical reaction is the [[charge]] divided by the [[elementary charge]] of the ion or of electrons transferred in the reaction as defined in the reaction equation. ''z'' is a positive integer. ''z''<sub>B</sub> = ''Q''<sub>B</sub>ยท''e''<sup>-1</sup>; [[Cohen 2008 IUPAC Green Book]]
- [[Elementary charge]] of O<sub>2</sub> in [C]
- In the absence of ATP.
|| Correct answer is the '''[[charge number]]'''. '''[[Charge number]]''' of an ion or electrochemical reaction is the [[charge]] divided by the [[elementary charge]] of the ion or of electrons transferred in the reaction as defined in the reaction equation. ''z'' is a positive integer. ''z''<sub>B</sub> = ''Q''<sub>B</sub>ยท''e''<sup>-1</sup>; [[Cohen 2008 IUPAC Green Book]]
|| Correct answer is the '''[[charge number]]'''. '''[[Charge number]]''' of an ion or electrochemical reaction is the [[charge]] divided by the [[elementary charge]] of the ion or of electrons transferred in the reaction as defined in the reaction equation. ''z'' is a positive integer. ''z''<sub>B</sub> = ''Q''<sub>B</sub>ยท''e''<sup>-1</sup>; [[Cohen 2008 IUPAC Green Book]]
- Alphabetical order of O<sub>2</sub> isotope
+ Absence of ADP.
|| Correct answer is the '''[[charge number]]'''. '''[[Charge number]]''' of an ion or electrochemical reaction is the [[charge]] divided by the [[elementary charge]] of the ion or of electrons transferred in the reaction as defined in the reaction equation. ''z'' is a positive integer. ''z''<sub>B</sub> = ''Q''<sub>B</sub>ยท''e''<sup>-1</sup>; [[Cohen 2008 IUPAC Green Book]]
|| Correct answer is the '''[[charge number]]'''. '''[[Charge number]]''' of an ion or electrochemical reaction is the [[charge]] divided by the [[elementary charge]] of the ion or of electrons transferred in the reaction as defined in the reaction equation. ''z'' is a positive integer. ''z''<sub>B</sub> = ''Q''<sub>B</sub>ยท''e''<sup>-1</sup>; [[Cohen 2008 IUPAC Green Book]]



Revision as of 10:36, 27 January 2020

Do you feel the Coupling?

Note: This quiz was made to test your knowledge of mitochondrial terminology of coupling states and to help you understand basic concepts of mitochondrial physiology


1 Maximal oxygen flux JkO2 is reached in:

state.

2 LEAK state can be measured:

After uncoupler titration.
Absence of ADP.
After addition of kinetically saturation doses of ADP.
In the absence of ATP.

3 How are the units of electric energy [J] and electric force [V] related?

V = J/C
V = JยทC
V = (JยทF)/C
V = J/(CยทF)

4 Express -460 kJ/mol O2 as electrical force in units of volt [V].

- 1.2 kV
- 120 V
-1.2 V
1.2 V

5 Why should we do that?

To express both in identical motive units [MU]
To feel insecure
To compliment our brain mitochondria
To get free drinks


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