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Category > Biology Posted 20 May 2017 My Price 6.00

compound, “X”

Q.  I take plant cells and treat them with a compound, “X” that binds irreversibly to all the Fe3+ in the cells (even to the protein-coordinated ions). X-Fe3+ cannot be reduced to X-Fe2+. What statement BEST describes the effect that “X” will have on plant cells?

  A) PS I will be blocked  B) Dark reactions will be inhibited   C) All photosynthesis will be stopped   D) All photosynthesis and the ETC will be stopped.

 

 Q. I treat cells with an inhibitor of ETC Complex III. These cells begin to accumulate lactic acid. Why does this make sense from a biochemical standpoint

 

Q.  You add a molecule, “X” to cells and find that CoQH2 accumulates in cells. “X” has no direct effect on CoQ. Based on this, can you determine which step of the ETC is being inhibited by “X?” Give reasons for your answer.

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SuperTutor
(15)
Status NEW Posted 20 May 2017 03:05 AM My Price 6.00

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