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    Physics & Astronomy
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    Foundations of Astronomy
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    Exam 15: Life on Other Worlds
  5. Question
    A Single Human Cell Encloses About 1
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A Single Human Cell Encloses About 1

Question 3

Question 3

Multiple Choice

A single human cell encloses about 1.5 metres of DNA,containing 4.5 billion base pairs.How far apart are these base pairs in the DNA?


A) 3.3×10¹⁰ nm
B) 3×10⁹ nm
C) 300 nm
D) 0.34 nm

Correct Answer:

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