You and your fellow students find it difficutl to believe that the
oxidation of a two carcon acyl compound requires a pathway as complex
as the citric acid cycle.  In order to berify the metabolic pathways
you have been learning about, you conduct an experiment using a sample
of gluscose reasioactively labeled with 14C at C-1.  In which
glycolytic or citric acid cycle intermediate, and on which carbon
should you find the label: If O2 were unavailable, in the presence of
malonate, after one round of the citric acid cycle, after three rounds
of the citric acid cycle?

We recommend that you use Google Answers as a tool to assist you with
your homework rather than as a substitute for you doing your homework
yourself. Please note that we reserve the right to remove questions
from the site for any reason, and questions that are clearly homework
may be subject to deletion.

Off topic, but wasn't there a great song about this? Sort of a ragtime-ish thing? 

Hm, I think I need to post that as a Question...