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BISC_320_Midterm_1_answer_key

BISC_320_Midterm_1_answer_key - Midterm 1 Statistics 11:00...

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Midterm 1 Statistics: 11:00 Lecture Noon Lecture Class Average (out of 100 possible pts) 89.24 87.17 Standard Deviation 9.46 10.34 High Score 100 100 Low Score 52 50 Re-grade Policy: Re-grade is not your opportunity to haggle for points! If you feel a factual or arithmetic error was made in the grading of an examination, not on judgments about how many points an answer was awarded, you must do the following: submit a written re-grade request along with your exam to your TA within one week of the graded exam being returned to the class. Your written request must clearly explain the error made in grading. Your entire answer will be re-graded (not just the part you think deserves more credit) by the same grading TA; your grade may go up or down as a result of a re-grade. If you still have questions after the re-grade, you may contact Dr. Baker.
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DISC 320 Midterm 1 Answer Key (100 pts) September 20, 2006 Pape Total: 1. (10 pts) Please make a simple diagram showing what subsequently happens to two "old" DNA strands (in a double helix) in a parent cell that then divides to become two daughter cells. Diagram should show: old-old in parent~ new-old in one daughter and new-old in the other daughter -If chJ.V\'} ~~ (C1f'€-11'-c.e-ll.. .K..CA.~c1I.U\ck.1 -=\) '5 ph. 2. (10 pts) Once attached to a DNA strand, what direction do (a) DNA polymerases and (b) RNA polymerases travel on the DNA strand that is being copied? (c) What direction do ribosomes travel on rnRNA strands? (Use 5' and 3' ends in all three of your answers.) iCOM?c~ =tS> 4 rk.
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