Question

A. In what organelle of the cell does β oxidation of fatty acids take place? chloroplasts...

A. In what organelle of the cell does β oxidation of fatty acids take place?

chloroplasts
cytosol
nucleus
mitochondria

Golgi apparatus

B. Which of the following forms of fatty acids can cross the inner mitochondrial membrane?

free fatty acyl-carboxylate
fatty acyl CoA
fatty acyl-carnitine
fatty acyl-glycerol
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Answer #1

A) Beta oxidation of fatty acids:

It takes place in the mitochondrial matrix for the most part. However, fatty acids have to be activated for degradation by coenzyme A by forming a fattyacyl-CoA thioester. For short and medium length fatty acids, they undergo this reaction in the mitochondria.

B) Fatty acyl CoA is impermeable to the inner mitochondrial membrane, so it is carried in the form of fatty acyl carnitine.

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