Question

where is pyruvate dehydrogenase located?
in the mitochondrial matrix of
i dont know yet
in the cytosol of both prokaryotes
and eukaryotes
in the cytosol of prokaryotes and
the mitochondrial matrix of
eukaryotes
in the cytosol of prokaryotes and
the intermembrane space in
eukaryotes
in the mitochondrial matrix of
eukaryotes but not in prokaryotes

Explanation:

Pyruvate dehydrogenase is an enzyme complex involved in the conversion of pyruvate to acetyl - CoA. In eukaryotes, this reaction occurs in the mitochondrial matrix. Prokaryotes do not have mitochondria.

Answer:

In the mitochondrial matrix of eukaryotes but not in prokaryotes.