<prompt> Enzyme which is a marker for mitochondria isGlutamate dehydrogenaseAcid phosphataseAlkaline phosphataseHexokinase  <response>: Only liver mitochondria contain glutamate dehydrogenase GDH which deaminates glutamate to alpha-ketoglutarate plus ammonia. So, all amino acids are first transaminated to glutamate, which is then finally deaminated transdeamination. So glutamate dehydrogenase acts as the mitochondrial marker for liver cells.Ref: D M Vasudevan 7th edition Page no: 202 