Question

Explain what it means if an organism uses Fe3+ as an electron acceptor, as far as where in the ATP producing process this would happen, and what might be a likely reaction and a likely product if it is used as the electron acceptor?

Answer 1

* In Anaerobic respiration a molecule other than oxygen is used as the terminal electron acceptors in the electron transport chain Anaerobic respiration is the formation of ATP without oxygen. This method still incorporates the respiration electron transport chain but without using oxygen as the terminal electron acceptor. Instead molecules such as sulphate (sO_42^-), nitrate(NO_2^-) or sulphur(s) are used as electron acceptors These molecules have a lower reduction potential than oxygen . Thus less energy is formed per molecule of glucose in anaerobic versus aerobic conditions many different types of electron acceptors may be used for anaerobic respiration Denitrify fiction is the utilization of nitrate(NO_3^-) as the terminal electron acceptor Nitrate like oxygen has a high reduction potential ,this process is wide spread and used by many members of proteobacteria many denitrifying bacteria can also use ferric icon (fe^3+) and different organic electron acceptors ferric iron(Fe^3+) is a wide spread anaerobic terminal electron acceptor used by both