This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Which of the following is a function of the golgi apparatus- 
Select and explain. 
A. Modification of proteins, B. mRNA synthesis, C. Protein storage, D. tRNA synthesis
A: Modification of proteins
Answer: A: Modification of proteins 
Explanation: * The Golgi apparatus functions in association with the endoplasmic reticulum. Small 'transpo vehicles' continuously pinch off from the endoplasmic reticulum and then fuse with the Golgi apparatus. * Thus, substances entrapped in the transpo vesicles are transpoed from the endoplasmic reticulum to the Golgi apparatus. * The transpoed substances are then processed in the Golgi apparatus to form lysosomes, secretory vesicles and other cytoplasmic components. * In sho, the Golgi apparatus brings about modification of proteins.