What has been the total ATP yield directly from the TCA cycle per molecule of glucose?

Step-by-step solution

We have till now seen that glucose has been broken down to release CO2 and eight molecules of NADH + H+ ; two of FADH2 have been synthesised besides just two molecules of ATP in TCA cycle . You may be wondering why we have been discussing respiration at all – neither O2 has come into the picture nor the promised large number of ATP has yet been synthesised. Also what is the role of the NADH + H+ and FADH2 that is synthesised? Let us now understand the role of O2 in respiration and how ATP is synthesised.