water is the final electron acceptor in the electron transport chain of cellular respiration.
water is the final electron acceptor in the electron transport chain of cellular respiration.
what is the final electron acceptor in the electron transport chain of cellular respiration?
water
aerobic metabolism is up to 15 times more efficient than anaerobic metabolism (which yields 2 molecules atp per 1 molecule glucose). however some anaerobic organisms, such as methanogens are able to continue with anaerobic respiration, yielding more atp by using other inorganic molecules (not oxygen) as final electron acceptors in the electron transport chain. they share the initial pathway of glycolysis but aerobic metabolism continues with the krebs cycle and oxidative phosphorylation. the post-glycolytic reactions take place in the mitochondria in eukaryotic cells, and in the cytoplasm in prokaryotic cells.









































section::::aerobic respiration.:glycolysis.
cellular respiration
an exoelectrogen normally refers to a microorganism that has the ability to transfer electrons extracellularly. while exoelectrogen is the predominant name, other terms have been used: electrochemically active bacteria, anode respiring bacteria, and electricigens. electrons exocytosed in this fashion are produced following atp production using an electron transport chain (etc) during oxidative phosphorylation. conventional cellular respiration requires a final electron acceptor to receive these electrons. cells that use molecular oxygen (o) as their final electron acceptor are described as using aerobic respiration, while cells that use other soluble compounds as their final electron acceptor are described as using anaerobic respiration. however, the final electron acceptor of an exoelectrogen is found extracellularly and can be a strong oxidizing agent in aqueous solution or a solid conductor/electron acceptor. two commonly observed acceptors are iron compounds (specifically fe(iii) oxides) and manganese compounds (specifically mn(iii/iv) oxides). as oxygen is a strong oxidizer, cells are able to do this strictly in the absence of oxygen.
exoelectrogen