DNA Extraction Lab - Get Now DOC - DOC by g7PJZX

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									             Conclusions and Analysis:                                                          Conclusions and Analysis:
1. All of the steps in the extraction procedure are necessary and serve   1. All of the steps in the extraction procedure are necessary and serve an
   an important function. Each step aids in isolating (separating) the       important function. Each step aids in isolating (separating) the DNA from
   DNA from other cellular materials. Match the procedure with its           other cellular materials. Match the procedure with its function:
   function:                                                                          PROCEDURE:
   PROCEDURE:                                                                         A.   Filter strawberry mixture through cheesecloth
   A. Filter strawberry mixture through cheesecloth                                   B.   Squish strawberry with soapy/salty solution
   B. Squish strawberry with soapy/salty solution                                     C.   First smashing/grinding of strawberry
   C. First smashing/grinding of strawberry                                           D.   Addition of alcohol to filtered mixture
   D. Addition of alcohol to filtered mixture                                         FUNCTION:
   FUNCTION:                                                                          ___ to precipitate (pull out) DNA from solution
   ___ to precipitate (pull out) DNA from solution                                    ___ to separate components (parts) if the cell
   ___ to separate components (parts) if the cell                                     ___ to break open the cells
   ___ to break open the cells                                                        ___ to separate protein and dissolve membranes
   ___ to separate protein and dissolve membranes
                                                                          2. What did the DNA look like? Draw what the DNA looked like under the
2. What did the DNA look like? Draw what the DNA looked like under           microscope.
   the microscope.
                                                                          3. Explain what happened when alcohol was added to the mixture.
3. Explain what happened when alcohol was added to the mixture.
                                                                          4. A person cannot see a single cotton thread 100 feet away, but if you
4. A person cannot see a single cotton thread 100 feet away, but if you      wind thousands of threads into a rope, it could be seen from much
   wind thousands of threads into a rope, it could be seen from much         further away. Compare this example with what happened to the
   further away. Compare this example with what happened to the              strawberry DNA.
   strawberry DNA.
                                                                          5. Why do you think it is important for scientists to be able to remove DNA
5. Why do you think it is important for scientists to be able to remove      from an organism?
   DNA from an organism?
                                                                          6. On the cell below:
6. On the cell below:                                                                A. Draw the genetic material (DNA) in the appropriate place.
       a. Draw the genetic material (DNA) in the appropriate place.                  B. Label the cell membrane, cytoplasm, nuclear membrane,
       b. Label the cell membrane, cytoplasm, nuclear membrane,                           nucleus, genetic material
           nucleus, genetic material

								
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