Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Question

Please answer the following questions (Biology) (DNA questions) 

Where is DNA found in the cell? 

How does 2m of DNA fit into a cell 0.000 005m in diameter? 

 

A person can’t see a single strand of thread from 30m away, but if thousands of those threads are wound together into a rope, they could be seen.  How does this statement relate to the DNA you observed?

 

DNA dissolves in water, but not in ethanol.  Explain what happened when the ice cold ethanol came in contact with the cell extract during your extraction.  If the ethanol was not ice-cold, how would this have affected your collection? 

 

What are the potential reasons for extracting DNA from a cell?  (Name 3)

 

Do you think scientists would extract human DNA the same way you extracted fruit DNA? Explain. Think about the structural differences between plant and animal cells. 

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