aerobic respiration in bacteria
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Answers:If you look at the net free energy change from the following anaerobic reactions: glucose + 3 NO3- + 3 H2O ==> 6 HCO3- + 3 NH4+ G0' = -1796 kJ / mol glucose glucose + 3 SO42- + 3 H+ ==> 6 HCO3- + 3 SH- G0' = -453 kJ / mol glucose glucose + 12 S + 12 H2O ==> 6 HCO3- + 12 SH- + 18H+ G0' = -333 kJ / mol glucose and look at the free energy change from aerobic respiration: glucose + 6 O2 ==> 6 CO2 + 6 H2O G = -2880 kJ / mol glucose Then you see that you are absolutely right about the nature of the terminal electron acceptor that is different. These very important terminal electron acceptors (nitrate NO3-, sulfate SO42-, elemental sulfur S) have smaller reduction potentials than O2, meaning that less energy is released per oxidized molecule of primary electron donor in the above reactions) than in aerobic respiration (i.e. it is less energetically efficient). Hope this helps.
Answers:Aerobic respiration merely describes whether or not the reaction requires oxygen or not. Both glycolysis and fermentation are anaerobic, meaning they do not require oxygen. Glycolysis requires 2 ATP, gluclose, and 2 molecules of NAD+. The energy produced from glycolysis is 4 ATP (resulting in a net gain of 2). The products of glycolysis are 2 pyruvate molucules, 4 ATP, and 2 NADH molucules. Glycolysis occurs just outside the mitochondria of the cell. Fermentation takes place after glycolysis. The products are lactic acid or alchol (depending on what kind of fermentation), 2 ATP, and CO2. The energy produced is 2 ATP, far less than aerobic respiration. Fermentation is carried out mostly by yeasts and bacterias.
Answers:Aerobic respiration: A type of respiration in which foodstuffs (usually carbohydrates) are completely oxidized to carbon dioxide and water, with the release of chemical energy, in a process requiring atmospheric oxygen. Equation: Glucose + Oxygen -----> 'E' + Carbon dioxide + Water Input: 1).glucose 2).oxygen Output: 1).A large amount of energy 2).Carbon dioxide 3).Water Anaerobic respiration: A type of respiration in which foodstuffs (usually carbohydrates) are partially oxidized, with the release of chemical energy, in a process not involving atmospheric oxygen. Since the substrate in never completely oxidized the energy yield of this type of respiration is lower than that of aerobic respiration. Equation for human anaerobic respiration: Glucose -----> 'e' + lactic acid Equation for some yeasts and bacteria: Glucose -----> 'e' + ethanol (alcohol) + carbon dioxide Input: 1).glucose Output: 1).small amount of energy 2).lactic acid (in humans) 3).ethanol (in bacteria and yeasts) 4).carbon dioxide (in bacteria and yeasts)
Answers:Aerobic means you have oxygen so it would be 1. Lactic acid and alcohol are both produced in anerobic reactions (that is why your muscles hurt when you are working hard...not enough oxygen so the cells make lactic acid)