Which of these is NOT a product of glycolysis
and one of the answer is water and water and FADH2, so of course i put FADH2 but now then water is produced in glycolysis but i swear i never heard of this nor did my professor ever stress this. This is specifically GLYCOLYSIS and not just respiration.
oh and if youre talking about glycolysis strictly, it's really easy to rule out FADH2, that sticks out like a sore thumb if you took biochem. FADH2 first comes into play during the conversion of pyruvate to acetyl-coa in the pyruvate dehydrogenase complex i believe.
but the mcat wouldn't ask you something so specific about glycolysis i believe. maybe something really general like what the first substrate is, or the final product is, or what is needed to run it (initial 2 atp) or something like that.