The correct answer is through anaerobic respiration in the cytoplasm.
Explanation:
Cellular respiration is of 2 types
1 Aerobic respiration Respiration that require oxygen to occur
2 Anaerobic respiration Respiration that do not requires oxygen.
During low oxygen level the body of runner keep up with the demand for energy by undergoing anaerobic respiration which includes Glycolysis.
During anaerobic condition the functionally active body cells undergo glycolysis and with each glycolysis 2 molecules of ATP are generated which can some how boost the energy supply within runner"s body.
If the alanine mutation is restored to K or lysine residue, most likely the wild type level of activity can be restored. This is because, arginine and lysine have -NH2 as the functional group. So, functional similarity of arginine can be expected from lysine as well.
Hunger is one the early symptoms of people who has hypoglycemia. Hypoglecemia is having low sugar in the blood and if there is any secretion of insulin from any part of the body, it lower the sugar more and more which is not what we want.