can someone explain the cell respiration lab to me?? ap bio =( its with the germinating and non germinating seeds..why does the amount of oxygen consumed determine cell respiration? what does oxygen have to do with cell respiration anyway? isnt cell respiration when the organism uses glucose to make ATP energy? so wheres oxygen come in? thanks...
2007-01-09 13:44:36 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Biology
As stated above, oxygen is important in the mitochondria, specifically the electron transport chain. NADH donates electrons to the electron transport chain. Theses electrons move from complex to complex. As these electrons move through these complexes, it causes hydrogen to pass across the membrane of the mitochondria. The buildup up hydrogens on one side of the membrane causes a "force" (Like water behind a dam). As these hydrogen move back across the membrane they pass through a complex known ATP sythase. (Water behind a dam going through a turbine to produce electricity). This is how ATP is made, so yes you are correct. Oxygen. As the electrons move through the complexes, they come to the end and it is oxygen that is responsible for picking them up. If oxygen were not present, then the electrons would build up, back up and eventually stop ATP production.
2007-01-09 14:16:15 · answer #1 · answered by Brandon L 2 · 0⤊ 0⤋
Oxygen plays a role in Krebb's transport cycle in the mitochondria. It has to do with donating electrons so that the glucose is broken down in different steps, rather than all broken down at once.
2007-01-09 21:53:26 · answer #2 · answered by Anonymous · 0⤊ 0⤋
oxygen is important in cell resp because it acts as the final electron acceptor in the process of ATP synthesis. as the glucose is broken down, electrons are removed & carried by electron carriers (NADH and FADH2) to the electron transport chain. a proton gradient is created by the ETC which ultimately drives ATP synthesis. the final electron acceptor in the chain is oxygen; when the electrons bind to oxygen, water is formed and released as waste. because of this, oxygen is required for cell resp and the amount of oxygen present determines the amount and rate of glucose that can be broken down to form ATP.
2007-01-09 22:22:59 · answer #3 · answered by wootuba 1 · 0⤊ 0⤋
In the Mitochondria
2007-01-09 21:49:30 · answer #4 · answered by LuckyChucky 5 · 0⤊ 0⤋