Class 10 Biology MCQs (Grade 10) From Textbook

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Class 10 Biology Learning Guide: Certification Test 391

General Biology MCQ App & e-Book: MCQ 391

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MCQ: 391

What is present on the inside of double helix?

  1. nitrogenous base
  2. phosphate-sugar backbone
  3. nucleotides
  4. ribose sugar

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General Biology Learning Guide: Class 10 Biology App & eBook MCQ

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