4152010 Discussion section-1

4152010 Discussion section-1 - A F D E C B E B F A C B D B...

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A F D E C B E B F A C B D B B C D Quiz 5 Name-------------------------- 1 to 3. Prokaryotic gene regulation. For each combination of sugars below, determine if the levels of allolactose are high or low, if the repressor is active, if the levels of cAMP are high or low, if CAP is active, and if lac operon expression will occur. (Choose all that applies)? a. Allolactose high b. Allolactose low c. Repressor active d. Repressor inactive e. cAM P low f. cAMP high g. CAP active h. CAP inactive i. Lac operon on j. Lac operon off 1. Glucose only. B, c, e, h, j 2. Lactose only. A, d, f, g, i 3. Glucose and Lactose. A, d, e, h, j 4. A corepressor a. Binds to the operator and prevents the repressor from binding at this site b. Binds to the promoter and prevents the repressor from binding the operator c. Combines with a repressor and activate it to bind the promoter d. Combines with a repressor and activate it to bind the operator e. Binds to the termination codons and allows protein synthesis to continue 5. What is the phenomenon of inhibition of gene expression by RNA molecules?
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