Anaerobic.
Anaerobic respiration occurs only in the absence of O2. When O2 is present, aerobic processes take over; so it can be said that O2 'poisons' anaerobic biochemistry.
aerobic respiration basically its first step is called glycolysis and is further divded in two forms either aerobic which occur in presence of o2 and anaerobic in absences of oxygen Exactly so to answer the question the process the REQUIRES O2 is aerobic respiration like i said.
Respiration or breathing. respiration is the more scientific term. The scientific formula for respiration is O2+C6H12O6(glucose)=CO2+H2O
During photosynthesis O2 is released by the photolysis of water whereas in respiration O2 is consumed in the breakdown of substrate(reserve food).In simple words , Photosynthesis release O2 while respiration requires O2.
· An anaerobic process It is the metabolic process that requires no oxygen to generate energy for example respiration in the absence of O2 is called anaerobic respiration.
Aerobic : If respiration takes place in the presence of O2, then it is called aerobic respiration/ aerobic activity. Eg: Plants and animals, protozoans, some bacteriaAnaerobic: IF respiration takes place in the absence of O2, then it is called anaerobic respiration/ anaerobic activity. Eg: Yeast, some bacteria
Anaerobic respiration in humans carries on in the cytoplasm of cells when oxygen is scarce, producing lactic acid as a byproduct. In yeast and some microorganisms, anaerobic respiration produces ethanol or other byproducts.
In the absence of oxygen, pyruvic acid is converted into lactic acid through a process called lactic acid fermentation. This process helps regenerate NAD+ so that glycolysis can continue in the absence of oxygen.
Oxygen (O2) is released by photosynthesis during the light reaction and is used in cellular respiration. Photo. = Light energy + CO2 + Water -----> Carbohydrate + O2 Resp. = Carbohydrate + O2 -----> Energy + CO2 + Water
Oxygen. O2.
O2
Photosynthesis: CO2 + H2O --> C6H12O6 + O2 Cellular Respiration: C6H12O6 + O2 --> CO2 + H2O reactants and products are switched