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: Biochemistry
[{'content': 'Two strands of DNA is/are held by: \nSelect and explain. \nA. Glycosidic bond, B. Hydrogen bond, C. Covalent bond, D. Ionic bond', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Answer( b) hydrogen bond The two strands are held together by hydrogen bond formed by complementary base pairs" (Satyanarayan 4th/75)"The base pairs are held together by hydrogen bonds: two between A and T and three between G and C. These hydrogen bonds, plus the hydrophobic interactions between the stacked bases, stabilize the structure of the double helix.', 'role': 'assistant'}]