This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cell Physiology and Intercellular Connections, Subject name: Physiology
A marker of Golgi apparatus is- 
Select and explain. 
A. Galactosyl transferase, B. Acetyl CoA synthetase, C. Pyruvate kinase, D. Malonyl CoA
A: Galactosyl transferase
Answer: A: Galactosyl transferase 
Explanation: Ans. A. Galactosyl transferaseEnzymatic Markers of Different Membranes-MembraneEnzymePlasma5'-NucleotidaseAdenylyl cyclase NA+-K+-ATPaseEndoplasmic reticulumGlucose-6-phosphataseGolgi apparatus CisGIcNAc transferase IMedialGolgi mannosidase IITransGalactosyl transferaseTrans Golgi NetworkSialyl transferaseInner mitochondrial membraneATP synthase