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Question

The variable portion of DNA molecule is ___________.
  1. Sugar
  2. Deoxyribose
  3. Base
  4. Phosphate
  5. Ribose

A
Phosphate
B
Sugar
C
Ribose
D
Base
E
Deoxyribose
Solution
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The DNA molecule is a polymer of nucleotides. Each nucleotide is composed of a nitrogenous base, a five-carbon sugar (deoxyribose), and a phosphate group. There are four nitrogenous bases in DNA

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