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: Physiology
[{'content': 'Colonic bacteria, on digestion of dietary fibres would give? \nSelect and explain. \nA. Free radicals, B. Glycerol, C. Butyrate, D. Butyrate', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e ButyratesIn herbivores, such as ruminants, fiber (mainly as cellulose) is a major source of energy after it has been digested by colonic microorganisms to small chain fatty acids (acetate, propionate and butyrate)Q which are absorbed into the poal vein. Colonic fermentation may also contribute to human energy requirements.', 'role': 'assistant'}]