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: Pathology
[{'content': 'Which statements best describe mechanical digestion? Select all that apply. \nSelect and explain. \nA. It breaks large food particles into smaller ones., B. It involves the breaking of covalent chemical bonds in organic molecules by digestive enzymes., C. It begins in the stomach, where some small, lipid-soluble molecules, such as alcohol and aspirin, can diffuse through the stomach epithelium into the circulation., D. It requires carrier molecules and includes facilitated diffusion, cotransport, and active transport.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A:\xa0Mechanical digestion\xa0breaks large food particles down into smaller ones.\nB:\xa0Chemical digestion\xa0involves the breaking of covalent chemical bonds in organic molecules by digestive enzymes.\nC:\xa0Absorption\xa0begins in the stomach, where some small, lipid-soluble molecules, such as alcohol and\xa0aspirin, can diffuse through the stomach epithelium into the circulation.\nD:\xa0Transport\xa0requires carrier molecules and includes facilitated diffusion, cotransport, and active transport.', 'role': 'assistant'}]