This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General, Subject name: Physiology
[{'content': 'Which of the following is used in exocytosis? \nSelect and explain. \nA. Ca, B. Mg, C. Na, D. K', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) CaExocytosis is a calcium dependent process where in the cellular contents are moved out of the cell in the form of vesicles (Cell Vomiting)', 'role': 'assistant'}]