JAMB Biology 2025 Objective — Question 9
Question 9 of 40 from the Joint Admissions and Matriculation Board (JAMB) Biology 2025 Objective paper, with the correct answer and a full explanation.
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The two strands of a DNA molecule are held together by which type of bond between complementary bases?
- A. Ionic bonds
- B. Covalent bonds
- C. Hydrogen bondsCorrect
- D. Metallic bonds
Explanation
DNA is a double-helix structure, and the two strands of the helix are held together by hydrogen bonds between complementary nitrogenous bases. These bonds are crucial for maintaining the stability and structure of the DNA molecule.
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