Question

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

Explanation:

Prokaryotes lack mitochondria. Pyruvate dehydrogenase is in their cytosol. Eukaryotes have mitochondria, and this enzyme is in the mitochondrial matrix.

Answer:

In the cytosol of prokaryotes and the mitochondrial matrix of eukaryotes