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What two important physical properties contribute to the viscosity of DNA? How is DNA made non-viscous by...

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Biology

  1. What two important physical properties contribute to theviscosity of DNA?

  2. How is DNA made non-viscous by mechanical shearing? Use alabeled diagram to show what happens to the molecular structure ofthe DNA.

  3. How is DNA made non-viscous by heating in a boiling water bath?Use a labeled diagram to show what happens to the molecularstructure of the DNA.

  4. Why is DNA in cells not viscous?

Answer & Explanation Solved by verified expert
4.0 Ratings (551 Votes)
ATwo important physical properties contribute to the viscosity ofDNA1 DNA has vast length combined with its double strandedcharacter DNA is bonded by noncovalent chemical bonds dominatedby the hydrogen bondingAlso dsDNA is stable unless melted orunzipped by an external force2 DNA is rigid Two main factors account for the moleculesrigidity Mechanically the base pair building blocks of the polymerare stacked together with sufficient force to impart stiffness tothe structure Allied to this is the fact that DNA has negativecharges studded down its length to the    See Answer
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