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MCAT Biology MCQs – Certification Test 71

Double Helix MCQ (Question 71) – App & e-Book Download

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MCQ 71: The two strands of DNA are held together by:

  1. hydrogen bond
  2. Vander wall interaction
  3. ionic interaction
  4. covalent interaction

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Double Helix MCQ App (iOS & Android)

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MCAT Biology MCQ App (Android & iOS)

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