Biochemistry - Oxidative Phosphorylation - Discussion

Discussion :: Oxidative Phosphorylation - Section 1 (Q.No.16)

16. 

In aerobic respiration, the compound that enters a mitochondrion is

[A]. acetyl CoA
[B]. pyruvate
[C]. phosphoglyceraldehyde
[D]. oxaloacetate

Answer: Option B

Explanation:

No answer description available for this question.

Ahmad Anas M said: (Feb 8, 2013)  
The compound that enters Mitochondria during Aerobic respiration is not pyruvate. The correct answer is acetyl CoA. Pyruvate most be converted to Acetyl CoA which leads to Krebs cycle.

Mukisa Joseph said: (Apr 28, 2014)  
The compound that enters is pyruvate because the intermediate reaction of aerobic respiration which involves the pyruvate dehydrogenase complex takes place in the mitochondria. Since pyruvate dehydrogenase is mitochondrial, thus the conversion of pyruvate to acetyl coa takes place in the mitochondria.

David Yerima said: (Oct 31, 2015)  
Yes I agree with Ahmad because pyruvate most undergoes preparatory stage i.e pyruvate oxidation before it can't pass through the mitochondrial membrane.

Ijaz said: (May 1, 2016)  
Yes, @Ahmad.

The correct answer is acetyl CoA.

Ankita Kumari said: (Sep 30, 2016)  
The compound that enters Mitochondria during Aerobic respiration is acetyl CoA. Pyruvate converted to Acetyl CoA which leads to Krebs cycle.

Manisha said: (Nov 22, 2017)  
Under aerobic conditions pyruvate is transported to mitochondrial matrix where it is oxidatively decarboxylated by pyruvate dehydrogenase to form acetyl Co-A.

Ans: Pyruvate.

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