ANAEROBIC RESPIRATION
The respiration which takes place in the absence of oxygen is called anaerobic respiration. Ex; yeast and some kinds of bacteria. The end products of anaerobic respiration are : lactic acid and carbondioxide (with very little amount of heat ) in bacteria and Ethyl alcohol and carbondioxide (with little amount of heat) in yeast. When we make dough by adding yeast for making buns, pizza bases, bread etc we observe a peculiar smell of ethyl alcohol. Here yeast undergoes anaerobic respiration reacting with sugar in white flour and releasing carbondioxide gas which gets trapped in the dough due to which holes are formed in the dough. DEMOSTRATING ANAEROBIC RESPIRATION IN THE LABORATORY we can demonstrate anaerobic respiration in the laboratory by a simple experiment. Let's see the complete activity. LAB ACTIVITY AIM: To demonstrate anaerobic respiration in yeast APPARATUS (MATERIALS)REQUIRED: A thermometer, bent tube, small test tube and ...