Which of the following are true of the citric acid cycle? Note that there is mor

Question

Which of the following are true of the citric acid cycle? Note that there is more than one correct answer and you must select all appropriate options to receive full credit. The citric acid cycle is responsible for generation of the proton motive force It is the cycle that generates the CO_2 in your breath The citric acid cycle produces the majority of ATP generated during the aerobic respiration of glucose It produces intermediates that can be siphoned off for biosynthetic reactions Pyruvate produced by glycolysis is used as input for the citric acid cycle It can produce 4 NADH and 1 FADH2 per mol pyruvate consumed The citric acid cycle is required for energy conservation by fermentative organisms The citric acid cycle produces ATP as a result of oxidative phosphorylation

Explanation / Answer

Answer- Following are the tru options for the citric acid cycle.

1) It is the cycle taht generates the CO2 in your breath.

2) The citric acid cycle produces the majority of ATP generated during the aerobic respiration of glucose.

3) It produces intrmediates that can be siphoned off for Biosynthetic reaction.

4) Pyruvate produced by glucolysis is used as input for citric acid cycle.

5)It can produce 4 NADH and 1FADH2per mol pyruvate consumed.

6) The citric acid cycle produces ATp as a results of Oxydatiove Phosphorylation.

Expalination-citric acid cycle is a part of celluler respiration.Citric acid cycle is an aerobic process which require oxygen.

Celluler respiration process involved 3 steps-

Glycolysis- In whic glucose molecule is broken down in 2 molecules of pyruvate.4 molecules of ATP synthesized in glycolysis process.

Citric acid cycle- Pyruvate produces in glycolysis transformed into acetyle co A in mitochondria.Then acetyl co A modified to produce energy precursors in preperation for next step.In this process many intermediates producesed which are used for other biosynthetic process.2molecule of ATP.8 molecule of NADH and 2molecule of FADH2 produced in citric acid Cycle for the one molecule of glucose.because glucose produces 2 molecules of pyruvate which is metabolised in citric acid cycle. for one molecule of pyruvate 1 molecule of ATP ,$ molecule of NADH and 1 molecule of FADH2 is produced.In this way citric acid cycle produces mejority of ATP during aerobic respiration of glucose.Co2 and Energy Are the End product of Citric acid cycle.It is the same co2 which is removed from the body by breathig process.and the energy conserved in the form of Atp and reduced carrier NADH and FADH is used in elctron transport chain and converted in usable form.

Pyruvate is a branching point for different metabolic pathway.Pyruvate has ulternative fate in the aerobic and anaerobic organisms.I the presence of Oxygen (in aerobic organism ) pyruvate undergoes aerbic metabolism through Citric acid cycle whereas in anaerobic organism (In the absences of Oxygen) it undergoes fermentation.

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