Ephedra vs. Ephedrine alkaloids. Ephedrine alkaloids being banned isn't the end of ephedra. There are no many products available containing ephedra extract, which is a different version of the ephedra then the one that contained ephedra alkaloids. The benefit of this ephedra vs ephedrine alkaloids is that it doesn't cause the terrible jitters that was almost always associated with ephedrine alkaloids.
How many ATP are produced per 1 molecule of glucose in cellular respiration? If cellular respiration occurs in the presence of oxygen, then there is a net gain of 36 ATP molecules.
In summary, a single glucose molecule in glycolysis produces a total of 2 molecules of pyruvic acid, 2 molecules of ATP, 2 molecules of NADH and 2 molecules of water. Although 2 ATP molecules are used in steps 1-3, 2 ATP molecules are generated in step 7 and 2 more in step 10. This gives a total of 4 ATP molecules produced. If you subtract the 2 ATP molecules used in steps 1-3 from the 4 generated at the end of step 10, you end up with a net total of 2 ATP molecules produced. For a detailed view of the 10 steps, see: Details of the 10 Steps of Glycolysis.