A cell that lacks sulfite reductase but can still oxidize sulfur for energy could be identified by
A) adenosine phosphosulfate reductase coupled with substrate-level phosphorylation.
B) electrons being transferred to cytochrome c prior to shuttling them into the electron transport chain.
C) identifying an alternative quinone, flavoprotein, or cytochrome.
D) quantifying the release of sulfate byproduct.

Question

Quizplus · Accepted Answer

Adenosine phosphosulfate reductase is an enzyme that can be used in sulfur oxidation pathways, allowing the cell to oxidize sulfur for energy even in the absence of sulfite reductase.

A Cell That Lacks Sulfite Reductase but Can Still Oxidize