I’ve encountered questions where I’m asked to find out the CO2 released, the number of oxidative carboxylations etc. in the Krebs tricarboxylic acid cycle. I always include the pyruvate dehydrogenase reaction (sometimes termed the ‘link reaction’) that converts pyruvate (from glucose) to acetyl-CoA which then feeds into the Krebs cycle. However my answers are only considered correct for certain questions, while for the others they are not.
How do I decide if a reference to the Krebs cycle includes the pyruvate dehydrogenase reaction?