Question

someone explain to me the kreb cycle & gylcolysis

Answer 1

http://www.austincc.edu/emeyerth/krebs.htm (krebs cycle)
http://chemistry.about.com/od/biochemistry/ig/Glycolysis/ (glycolysis)

Answer 2

thanks

Answer 3

what's your name

Answer 4

OK, I'll give you a brief explanation and then send you to a website for more details because the whole explanation is quite long. In brief, glycolysis takes sugars (like glucose or table sugar and fructose or fruit sugar) and breaks them down to the two-carbon compound acetyl CoA. During this process some ATP is generated to hold the energy released during the process, and some NAD is converted to NADH.

The acetyl CoA then feeds into the Krebs cycle, which breaks it down further into two molecules of carbon dioxide during each "turn" of the cycle. In the process, the molecules FAD and NAD are reduced to FADH2 and NADH. Some GTP is also created to store some of the energy derived originally from the sugar.

Now the NADH and FADH2, which are reduced, go into the electron transport system in the mitochondria (if it's a mammalian cell--bacteria have the same process but they don't have organelles). The electron transport system reoxidizes the NADH and FADH2 into NAD and FAD. The electrons are ultimately transferred to oxygen to form water, and the stored energy is converted to ATP.