BACKGROUND Cellular respiration is the process by which cells obtain energy from glucose and is a very important biological process in living cell. As cells do cellular respiration, they need a pathway to store and transport electrons, the electron transport chain. The function of the electron transport chain is to produce a trans-membrane proton electrochemical gradient as a result of oxidatio...

Under field conditions atrazine inhibits C 0 2 fixation but the electron flow seems to be hindered partly only. The remaining capacity of the electron transport chain produces not used reducing electrons. The consequence should be a destructiv photooxidation. T his process however is sup­ pressed by photorespiration. When all possible substrats including stored carbohydrates are m etab­ olized ...