 What happens when we don't have enough oxygen and how to utilize that glucose? so Fermentation, I'm sure that you've heard about it. We have alcoholic fermentation It's not always about the vine and beer and so forth even though. Yes, that's how those drinks are made But as you notice here the bread it has little holes how those holes are made well, if we don't have oxygen then the process of Utilizing the glucose is turning into two possible There are two possible options for it in the case of the yeast that we're using to make bread the carbon dioxide is released and as the dough is growing it is actually just Injecting the carbon dioxide in it, which is making those bubbles as The result if you're making bread you already probably observed that the dough after a while after it rises is actually smelling like an alcohol Because alcohol really is released. So the ethanol is the result of the anaerobic Processing of the glucose or alcoholic fermentation How come would that we don't get drunk when we are eating the bread? Well, simply because to bake the bread denaturation of the proteins happens Which means that the process that that all the yeast that was there was blocked. It's not alive anymore So there is no one to build that alcohol alcohol has low temperature of the evaporation, so it's already evaporated and All that is left over of the carbon dioxide are those holes in the bread that makes bread really soft and and yummy How about lactic acid? I need to say About lactic acid from two points of use one of them is for instance making any dairy products That is the process where the glucose is broken down and forms three Carbon lactic acid but lactic acid is something that can be really painful if it's on the wrong spot So if you were over over exercising or doing something that you don't usually do a little bit pushing over the limits mitochondria that is present in your muscles may not be able to convert all the glucose into the carbon dioxide and water and have all that energy that is released during the crop cycle and and electron transport chain What is happening? We are getting into emergency mode, which means that we are utilizing glycolysis as a process and The lactic acid is produced in our muscles you have noticed that lactic acid has three carbons carbon atoms the same as the pyruvet, right? so that muscle ache that happens is that your Cells are actually burned by the lactic acid lactic acid needs to be Transferred through the bloodstream into the liver where the enzymes are going to convert Lactic acid into pyruvet and then utilizing to form the glucose and the glycogen In order to to heal so that the process that takes for our muscles to recover is the process that take all that Buildup of the lactic acid, which is the absence of the oxygen build during the absence of the oxygen and to transforming back into pyruvet now the more we exercise the more mitochondria is made in our Muscles and therefore there is less build-up of the lactic acid, right? the Energy utilization from one glucose if it enters the crop cycle 36 to 38 molecules of ATP glycolysis yields only to ATP and That is why this process is only backup Only if we don't have access of oxygen that is when our body goes into production of the Lactic acid. Thank you