440749
Descripción
Test por gina_evans0312, actualizado hace más de 1 año
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Creado por gina_evans0312
hace casi 11 años
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Pregunta 1
Pregunta
Tenet 1- The membrane should be permeable to protons
Respuesta
- True
- False
Pregunta 2
Pregunta
Tenet 2 - An electron transport chain powers the pumping of protons across a cell membrane
Respuesta
- True
- False
Pregunta 3
Pregunta
Tenet 3- Energy transducing membranes must have special systems allowing ions and metabolites to pass (to maintain osmotic pressure in the case of a high membrane potential)
Respuesta
- True
- False
Pregunta 4
Pregunta
Tenet 4- The ATP synthase should NOT also act as an ATP translocator
Respuesta
- True
- False
Pregunta 5
Pregunta
Why does disrupting the inner mitochondrial membrane increase alkylisation of the medium?
Respuesta
-
The inner membrane becomes more permeable and protons enter the mitochondria down the concentration gradient
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The inner membrane becomes more permeable and protons leave the mitochondria down the concentration gradient
Pregunta 6
Pregunta
Why does O2 injection acidify the membrane and prove chemiosmotic theory?
Respuesta
-
The O2 allows protons to be pumped out of the inner membrane into the solution, acidifying it
-
The O2 allows protons to be pumped out of the solution into the mitochondria acidifying it
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The medium then alkylises as they flow back in
Pregunta 7
Pregunta
The number of protons pumped is substrate dependent
Respuesta
- True
- False
Pregunta 8
Pregunta
What is this the symbol for in the protonmotive force equation?
Respuesta
-
Change in electrical potential
-
Change in pH
-
The Farraday constant
Pregunta 9
Pregunta
Put the Protonmotive force equation in order; Change in PMF = _ - (_ x _)
A = Farraday constant
B = Change in pH
C= Change in electrical potential
Respuesta
-
C-B-A
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B-C-A
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A-B-C
Pregunta 10
Pregunta
Short circuiting the protonmotive force generation system causes the energy to be released as heat
Respuesta
- True
- False
Pregunta 11
Pregunta
The number of protons pumped in a full cycle is cell dependent
Respuesta
- True
- False
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