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1. কোভিড-১৯ কোন ধরনের ভাইরাস?

  • A. DNA
  • B. DNA
  • C. DNA
  • D. DNA

Answer: Option D

Explanation:

DNA:   Deoxyribonucleic Acid

RNA:   Ribonucleic acid

mRNA: Messenger RNA  

 

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