Without oxygen how is ATP generated by the cell What is this

Without oxygen, how is ATP generated by the cell? What is this term?

Solution

Fermentation is the process of generation of energy in the form of ATP from glucose in the absence of oxygen (anaerobically) inside the human body specifically in muscle tissues. This energy supports twitching skeletal muscle movements of the human body when perform dynamic exercise under extreme conditions.\" Anaerobic\" is the term used for this type of respiration

Fermentation is the short-term process in human body and it produces minor levels of ATP for 20 to 30 seconds whereas lactic acid generates severe pain due to increased acidity of muscle tissue.                                                         

Another process:

Glycolysis is an anaerobic process (happens in the absence of oxygen) & takes place in cytosol, through which one glucose molecules is breakdown into two molecules of three-carbon pyruvate. The glycolysis of each glucose molecule generates 2 ATP molecules. ATP synthesis from anaerobic process is via glycolysis of glucose in the presence of various enzymes.

Glucose + 2 NAD⁺ + 2 P_i + 2 ADP 2 pyruvate + 2 NADH + 2 ATP + 2 H⁺ + 2 H₂O + heat