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Biochemistry

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Fatty Acid Synthesis Energy Cost in Eukaryotes

BIOCHM-IZ7IVY

Why do eukaryotic organisms have to consume more ATP than prokaryotes when synthesizing fatty acids?

A

ATP binds to Fatty Acid Synthase and promotes its activity.

B

ATP phosphorylates the acyl-group of Acetyl-CoA to activate it in eukaryotes.

C

Eukaryotic Fatty Acid Synthase is inactive until phosphorylated.

D

Acetyl-CoA is produced in the mitochondria and requires ATP for transport to the cytosol where fatty acid synthesis takes place.

E

It's a trick question! Both eukaryotes and prokaryotes require the same amount of ATP in fatty acid synthesis.