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Aerobic Respiration

Aerobic respiration requires the presence of oxygen to produce large amounts of ATP from pyruvate. Respiration is an exothermic catabolic process, where larger units of energy at broken into smaller units for cell utilization, and additionally the process releases heat. There are three main processes in aerobic respiration: glycolysis, Krebs cycle and oxidative phosphorylation (electron flow).

Glycolysis occurs in both aerobic and anaerobic respiration, and it is when one molecule of glucose is converted to 2 units of pyruvate. There are two stages in Glycolysis called the ‘Preparatory Phase’, where 2 ATP is consumed, and ‘Pay Off Phase’ where 4 ATP units are produced – net gain of 2 ATP. The Krebs cycle occurs in the mitochondrial matrix where Acetyl-CoA is generated from the pyruvate, this molecule helps form citrate in the Citric Acid Cycle. Oxygen presence becomes integral in Oxidative Phosphorylation, this is where products from the Krebs cycle, namely NADH and FADH2 are reduced to produce electrons that are fed into the Electron Transport Chain (ETC). The electrons move downhill, by using the electrochemical proton gradient. In total, 38 ATP are produced.

Aerobic metabolism is approximately 15 times more efficient than anaerobic respiration -  due to the fact anaerobic respiration takes part in fermentation after glycolysis. 

Molecules Required for Aerobic Respiration

The most efficient method of generating ATP for most organisms is aerobic respiration. What molecule is required for aerobic respiration? Some microbes thrive in an anaerobic environment. How do they efficiently generate ATP in these conditions?

The role of oxygen molecules required for aerobic respiration is

The role of oxygen molecules required for aerobic respiration is: a. to accept the low energy electrons at the end of the electron transport chain b. to form ATP c. to produce CO2 d. to store high energy electrons to pass to complex I of the electron transport chain. e. to accept electrons directly from either NADH o

The overall reaction of aerobic respiration of glucose

The overall reaction of aerobic respiration of glucose is summarized as: a. C6H12O6 + 6O2 + 6H20---6CO2 + 12H20+ENERGY b. C4H12O4 + 12H2O+6CO2---6O2 + ATP+ENERGY C. C4H2O4+6O2+6H20---6CO2+ATP+ENERGY D. C4H12O2+6O2+ATP---6CO2+12H20+ENERGY E. C6H12O6+6H20---6CO2+12H2+ENERGY

Glucose & clostridium in aerobic & anaerboic conditions

Flask A contains yeast cells in glucose-minimal salts broth incubated at 30C with aeration. Flask B contains yeast cells in a glucose-minimal salt broth incubated at 30C in an anaerobic jar. -Which culture produced more ATP? -Which culture had a shorter generation time? -which culture had a greater cell mass? -which cu

Respiration

What is forced vital capacity and how does it relate to lung volumes What does the table indicate about vital capacity and subjects age, sex, height, smoker, asthmatic or athlete, do the findings support previous studies. What is peak expiratory flow and what is the effects of sitting, standing and lying on this measuremen

Anaerobic and Aerobic Conditions

1. The energies of glycolysis shows that there is a large drop in free energy upon oxidation of glycerladehydes 3-phosphate to 1,3-bisphosphoglycerate. In the presence of oxygen, some of this energy is ultimately converted into ATP production. However, no such conversion happens under anaerobic conditions. Explain why? 2. Ho