Show the krebs cycle with the help of a diagram.
Answers
Answer:
PLEASE REFER TO THE ATTACHMENT!!
Answer:
In the presence of oxygen organisms are capable of using the Kreb's Cycle. The reason oxygen is required is because the NADH and [FADH2] produced in the Kreb's Cycle are able to be oxydized in the electron transport chain (ETC) thus replenishing the supply of NAD+ and [FAD].
Steps :------
---->> Acetyl-coa enters teh Kreb Cycle when it is joined to oxaloacetate by citrate synthase to produce citrate. This process requires the input of water. Oxaloacetate is the final metabolite of the Kreb Cycle and it joins again to start the cycle over again, hence the name Kreb's Cycle. This is known as the committed step
---->> Citrate is then converted into isocitrate by the enzyme aconitase. This is accomplished by the removal and addition of water to yield an isomer.
---->> Isocitrate is converted into alpha-ketogluterate by isocitrate dehydrogenase. The byproducts of which are NADH and CO2.
---->> Apha-ketogluterate is then converted into succynl-CoA by alpha-ketogluterate dehydrogenase. NADH and CO2 are once again produced.
---->> Succynl-CoA is then converted into succinate by succynl-CoA synthetase which yields one ATP per succynl-CoA.
---->> Succinate coverts into fumerate by way of the enzyme succinate dehydrogenase and [FAD] is reduced to [FADH2] which is a prosthetic group of succinate dehydrogenase. Succinate dehydrogenase is a direct part of the ETC. It is also known as electron carrier II.
---->> Fumerate is then converted to malate by hydration with the use of fumerase.
---->> Malate is converted into oxaloacetate by malate dehydrogenase the byproducts of which are NADH
