Question

an atricle on anaerobic respiration

Answer 1

The process of breakdown of food in the absence of oxygen where alcohol,
carbon-dioxide and energy is produced is called anaerobic respiration.
Eg.Yeast
Anaerobic respiration takes place in our muscle cells also.During heavy exercise and working the amount of energy needed is high but the supply of oxygen produced is less.The food gets partially digested and produces lactic acid.The accumulation of lactic acid causes muscle cramps.Thus anaerobic respiration takes place in our cells.

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Answer 2

Anaerobic respiration is a form of respiration using electron acceptors other than oxygen. Although oxygen is not used as the final electron acceptor, the process still uses a respiratory electron transport chain; it is respiration without oxygen.[1]

In aerobic organisms undergoing respiration, electrons are shuttled to an electron transport chain, and the final electron acceptor is oxygen. Molecular oxygen is a highlyoxidizing agent and, therefore, is an excellent acceptor. In anaerobes, other less-oxidizing substances such as sulfate (SO42−), nitrate (NO3−), sulphur (S), or fumarate are used. These terminal electron acceptors have smaller reduction potentials than O2, meaning that less energy is released per oxidized molecule. Anaerobic respiration is, therefore, in general energetically less efficient than aerobic respiration.

Anaerobic respiration is used mainly by bacteria and archaea that live in environments devoid of oxygen. Many anaerobic organisms are obligate anaerobes meaning that they can respire only using anaerobic compounds and will die in the presence of oxygen.