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Basketball1121 Basketball1121
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6 years ago
The basic building block of DNA and RNA is a(n) ____.
 
  a. nitrogenous base
  b. sugar-phosphate backbone
   c. amino acid
  d. nucleotide
 
   e. ribose sugar
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traviswatraviswa
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6 years ago
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6 years ago
Was a really tough hw problem!
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