Discussion
When acetate is the sole source of carbon for some microorganisms, the cycle which is used, is called
Answer: C
Correct answer: glyoxylate pathway
On acetate as the only carbon source, a cell would lose both carbons as CO2 in each turn of the TCA cycle and never accumulate anything to build with. The glyoxylate cycle bypasses the two decarboxylation steps, using isocitrate lyase and malate synthase, so that each two turns yield a four-carbon molecule for biosynthesis.
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