Regulation in bacteria and phagesincludes a number of exotic terms with which you can amaze/alarmyour friends. Twelve terms are given below followed by twelvestatements. Write the letter of the correct term. A single letteris sufficient. Not all letters need to be used, and a particularletter may be used more than once. (15 points)

Term list:

1. temporal control

2. positive control

3. negative control

4. inducible

5. non-inducible

6. repressible

7. constitutive

8. operator

9. repressor

10. effector molecule

11. feedback inhibition

12. suppressor mutation

13. 1. Phenotype with respect tobeta-galactosidase synthesis for the partial diploid I+ O+Z+/I- OcZ-     

___________

1. Phenotype of I+O+Z-/I+Oc Z+

___________

1. Phenotype of I+O+Z-/I-OcZ-

___________

1. Phenotype with respect to synthesis of tryptophan enzymes in thetrp operon trpR+ Oc S+ (trpR codes for the repress, S=structuralgenes).

_______

1. Phenotype of trpR+ O+ S+ in the presence of tryptophan.

________

1. Regulatory molecule must be present at site in DNA (such aspromoter) so that transcription can occur ____________.

2. Small molecules that bind to regulatory molecule such asrepressor__________

3. Mutation that reverses effect of another mutation at a differentsite.

____________

1. Type of operons responding to catabolite repression (glucoseeffect).

___________

1. Post-translational control of biosynthetic pathway.

___________

                    11.Regulatory molecule that binds to operator region in DNA.