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bis10108mt1bkey - BIS101-01 Spring 2008 Midterm I R L...

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Version (b) BIS101-01, Spring 2008 Midterm I R. L. Rodriguez, Instructor April 21, 2008 Please print your name below and on each subsequent page. Your exam has 7 questions and 6 pages (including cover page). AUTHORIZATION FOR POSTING OF GRADES BY SOCIAL SECURITY OR STUDENT ID NUMBER I, ______________________________, student ID No. ____________________ authorize the University to post my grades in BIS101-01 identified by my student I.D. or Social Security number. Signed: ________________________________ Dated: _______________ --------------------------------------------------------------- AUTHORIZATION FOR PUBLIC DISTRIBUTION OF GRADED PAPERS OR EXAMINATIONS I, _______________________________, student ID No. ____________________ authorize the University to distribute publicly my graded papers, homework assignments, and examinations (e.g., handed out in class or left in a exam bin) for BIS101-01 Signed: ________________________________ Dated: _______________
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Name____________________________________________________ 2 Version (b) 1 . Your textbook describes two experiments (i.e., Avery, MacLeod and McCarthy —1944 and Hershey and Chase — 1951) that proved that DNA is the genetic material. Indicate which of the following statement(s) correctly describes these two experimental approaches. (9 pts.) A. Hershey and Chase used radioisotopes of phosphorus ( 32 P) and sulfur ( 35 S) to show that the genetic material of the pneumococcus bacteria was DNA not proteins. B. The Avery experiment showed that non-virulent pneumococci could be transformed into a virulent strain with DNA. C. Hershey and Chase showed that shortly after infection with radio-labeled bacteriophage, 35 S was found predominately outside the infected bacteria while 32 P was found predominately on the inside of the bacteria.
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