What is the first intermediate compound in the krebs cycle

Pyruvate is the first intermediate compound in the Krebs cycle.

Explanation:

Pyruvate is the product formed from the glycolysis. In the Krebs cycle the compound pyruvate is converted into acetyl CoA. This is carried out into three steps. The 'Krebs cycle' is also called as the 'citric acid cycle' due to this reason. Multiple molecules of this pyruvic acid are used in yielding the high energy for the process. These chemical reactions are carried out by all anaerobic organisms.

Atp is is our little "pocket" of energy. of course, if you have too little, then it means you have too little energy, and you'll pass out. the way to not have enough, is to have no energy sources (glucose, fats, proteins). you can't have too many atp molecules. cycles like the krebs cycle produce it, but if you have too much of any substrate (or too little for that matter), the cycle stops and atp is no longer made (it stops until substrate levels are such that the process can go on). in any case, this is unlikely since atp is constantly hydrolyzed and remade, even while you're asleep. you won't have too much. if you have zero, you are dead or dying.