Choose the correct answers from the alternatives given : Most of the ATP made during cellular respiration is generated by
direct synthesis of ATP by the Krebs cycle
The correct option is C oxidative phosphorylation
Oxidation phosphorylation is the process where the electron acceptor such as NADH and FADH release their H ions and the ions and the electrons are tranported through various complexs of electron transport system.
NADH gives electrons which pass through 5 complexs of the ETS and FADH pass through 4 complexs of the ETS
These electron at the end of the transport system react with oxygen and form a molecule of water.
Where the proton which is released by the complexs of the ETS during the transport of electrons are used in formation of ATP.
one molecule of NADH forms 3 molecules of ATP and one molecule of FADH forms 2 molecules of ATP
So after one cycle of kerb 4 molecules of NADH are released and one molecule of FADH which results in formation of 12 ATP and 2 ATP respectively. Thus generating 14 ATP for each pyruvic acid.
Therefore the amount of the maximum generated ATP in cellular respiration is done by oxidative phosphorylation.
Therefore the answer option 'oxidative phosphorylation' is correct.