The total mass of DNA in the body is 50.0 g. If the number of nucleotides...

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Chemistry

The total mass of DNA in the body is 50.0 g. If the number ofnucleotides in ONE STRAND of DNA is approximately 3.0 x10⁶ , and the average length of a single nucleotide is0.34 nm, what is the length (in km) of one strand of DNA when it isstretched out to its maximum length (not in a helix)?

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4.1 Ratings (513 Votes)

Given-

The average length of a single nucleotide = 0.34 nm

The number of nucleotides in ONE STRAND of DNA is approximately = 3.0 x10⁶

Length of one strand of DNA when it is stretched out to its maximum length = 0.34 nm x 3.0 x10⁶

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â = 1.02 x 10⁶ nm

1 nm = 10^-12Km

So, 1.02 x 10^6 nm = 1.02 x 10^6 x 10^-12Km = 1.02 x 10^-6Km

The length one strand of DNA when it is stretched out to its maximum length = 1.02 x 10^-6Km

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