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judoca24 judoca24
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6 years ago
The two substances of unknown origin found within the cell discovered in the early twentieth century were
 
  A) neutrons and electrons.
  B) deoxyribonucleic acid and ribonucleic acid.
  C) protons and electrons.
  D) neutrons and protons.
  E) genes and electrons.
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doctorfededoctorfede
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6 years ago
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judoca24 Author
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6 years ago
I appreciate what you did here, answered it right Smiling Face with Open Mouth
shimyshiguy
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Yesterday
Smart ... Thanks!
kaytee23
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2 hours ago
Good timing, thanks!
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