440749
Description
Quiz by gina_evans0312, updated more than 1 year ago
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Created by gina_evans0312
almost 11 years ago
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Question 1
Question
Tenet 1- The membrane should be permeable to protons
Answer
- True
- False
Question 2
Question
Tenet 2 - An electron transport chain powers the pumping of protons across a cell membrane
Answer
- True
- False
Question 3
Question
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)
Answer
- True
- False
Question 4
Question
Tenet 4- The ATP synthase should NOT also act as an ATP translocator
Answer
- True
- False
Question 5
Question
Why does disrupting the inner mitochondrial membrane increase alkylisation of the medium?
Answer
-
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
Question 6
Question
Why does O2 injection acidify the membrane and prove chemiosmotic theory?
Answer
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The O2 allows protons to be pumped out of the inner membrane into the solution, acidifying it
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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
Question 7
Question
The number of protons pumped is substrate dependent
Answer
- True
- False
Question 8
Question
What is this the symbol for in the protonmotive force equation?
Answer
-
Change in electrical potential
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Change in pH
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The Farraday constant
Question 9
Question
Put the Protonmotive force equation in order; Change in PMF = _ - (_ x _)
A = Farraday constant
B = Change in pH
C= Change in electrical potential
Answer
-
C-B-A
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B-C-A
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A-B-C
Question 10
Question
Short circuiting the protonmotive force generation system causes the energy to be released as heat
Answer
- True
- False
Question 11
Question
The number of protons pumped in a full cycle is cell dependent
Answer
- True
- False
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