When glycolysis occurs a molecule of glucose is?

Answer 1

Glycolysis is a process in which glucose molecules break up into Pyruvite molecules.

It is important to have glucose (which have 6 carbon atoms in its molecule), as it can neatly split into two molecules of Pyruvite (which contains 3 carbon atoms in each of its molecules). Pyruvite is the molecule which is needed for the production of ATP.

The next step depends on the availability of Oxygen.

Pyruvite can either enter the Krebs cycle for the further process of cellular respiration (with the presence of Oxygen = aerobic cellular respiration), or go through a process of fermentation (without Oxygen = anaerobic cellular respiration). Both processes yield ATP, only in different quantity.

More info could be found on

http://en.wikipedia.org/wiki/Glycolysis

http://en.simple.wikipedia.org/wiki/Cellular_respiration

http://en.simple.wikipedia.org/wiki/Glucose.

; all the best !