Bis101_Quiros_Winter2005_Midterm2Key

Bis101_Quiros_Winter2005_Midterm2Key - NAME: ID# Last,...

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Unformatted text preview: NAME: ID# Last, First BIS101-2 Winter 05 MIDTERM 2 SHOW ALL WORK TO GET FULL CREDIT . Code of Academic Conduct All members of the academic community are responsible for the academic integrity of the Davis campus. Academic dishonesty is contrary to the purposes of the University and is not to be tolerated. Those who violate campus rules regarding academic misconduct are subject to disciplinary sanctions, including suspension and dismissal. Examples of academic misconduct include: 1) Receiving or providing unauthorized assistance on examinations, 2) Using unauthorized materials during an examination 3) Altering an exam and submitting it for re-grading 4) Using false excuses to obtain extensions of time 5) Taking an exam for another student. Authorization for Public Distribution of Graded Examination and grade posting by 6 last digits of SS# I,____________________________ , ID#__________________________ authorize that after this exam is graded, it can be distributed in class or placed in a holding bin, labeled BIS 101-02 in Briggs Hall. 1 MIDTERM 2 QUESTION VALUE SCORE 1 10 2 11 3 6 4 10 5 12 6 9 7 8 8 10 9 9 10 15 Bonus 5 Total 100 + 5 2 1) In a replica plate experiment, overnight culture in the plates shown below discloses a series of bacteria colonies of different phenotypes (colonies are numbered in each plate). Complete and minimal media contains glucose as carbon source, unless otherwise specified. (10) Complete medium Minimal medium Minimal + asparagine Minimal + threonine Minimal, lactose Minimal, lactose + methionine A) Which colonies are prototrophs (2) 2,6,7,9 B) What are the genotypes of the auxotrophs? (5) 1,(asp- thr+ met+); 3,4, (asp+ thr- met+); 5, 8 (asp+ thr+ met-); C) Which colonies are lac- (1) (6, 9) D) (2) Which colony(ies) is(are) an auxotroph and lac+ (5,8) 2 3 4 5 6 7 8 1 9 2 3 4 5 6 7 8 1 9 2 3 4 5 6 7 8 1 9 2 6 7 9 2 6 1 7 9 6 7 2 3 4 7 7 2 2 8 5 9 3 2) The table below lists the characteristics of 4 strains of E. coli involved in a conjugation experiment according to mating and growth ability in various culture media. (11) Strain Conjugation ability Minimal media Lactose Minimal + valine Minimal + valine + Lactose + valine + 1 Donor yes yes yes no no 2 Donor yes yes yes no no 3 Donor yes yes yes no no 4 Recipient no no yes yes no In separate experiments, donor strains 1, 2 and 3 are mated to recipient strain 4...
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This test prep was uploaded on 04/16/2008 for the course BIO SCI bis 101 taught by Professor Quiros during the Winter '97 term at UC Davis.

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Bis101_Quiros_Winter2005_Midterm2Key - NAME: ID# Last,...

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