Chemiosmosis

Beschreibung

Structural Basis for Biological Function (Membrane Proteins) Quiz am Chemiosmosis, erstellt von gina_evans0312 am 14/12/2013.
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Quiz von gina_evans0312, aktualisiert more than 1 year ago
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Erstellt von gina_evans0312 vor fast 11 Jahre
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Zusammenfassung der Ressource

Frage 1

Frage
Tenet 1- The membrane should be permeable to protons
Antworten
  • True
  • False

Frage 2

Frage
Tenet 2 - An electron transport chain powers the pumping of protons across a cell membrane
Antworten
  • True
  • False

Frage 3

Frage
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)
Antworten
  • True
  • False

Frage 4

Frage
Tenet 4- The ATP synthase should NOT also act as an ATP translocator
Antworten
  • True
  • False

Frage 5

Frage
Why does disrupting the inner mitochondrial membrane increase alkylisation of the medium?
Antworten
  • The inner membrane becomes more permeable and protons enter the mitochondria down the concentration gradient
  • The inner membrane becomes more permeable and protons leave the mitochondria down the concentration gradient

Frage 6

Frage
Why does O2 injection acidify the membrane and prove chemiosmotic theory?
Antworten
  • 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
  • The medium then alkylises as they flow back in

Frage 7

Frage
The number of protons pumped is substrate dependent
Antworten
  • True
  • False

Frage 8

Frage
What is this the symbol for in the protonmotive force equation?
Antworten
  • Change in electrical potential
  • Change in pH
  • The Farraday constant

Frage 9

Frage
Put the Protonmotive force equation in order; Change in PMF = _ - (_ x _) A = Farraday constant B = Change in pH C= Change in electrical potential
Antworten
  • C-B-A
  • B-C-A
  • A-B-C

Frage 10

Frage
Short circuiting the protonmotive force generation system causes the energy to be released as heat
Antworten
  • True
  • False

Frage 11

Frage
The number of protons pumped in a full cycle is cell dependent
Antworten
  • True
  • False
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