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The trp repressor is made of: DNA RNA Protein None of the above

The trp repressor is made of: DNA RNA Protein None of the above. 2. The trp operator is made of: DNA RNA Protein None of the above. 3 . The lac repressor can bind to: Tryptophan cAMP Allolactose The lac operator Both C and D.

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The trp repressor is made of: DNA RNA Protein None of the above

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  1. The trp repressor is made of: DNA RNA Protein None of the above

  2. 2. The trp operator is made of: DNA RNA Protein None of the above

  3. 3. The lac repressor can bind to: Tryptophan cAMP Allolactose The lac operator Both C and D

  4. 4. What would happen to the expression of the trpoperon if E. coli had a frameshift mutation in the trpR gene such that no trpRepressor protein was made? A) The cell would be unable to synthesize tryptophan B) The cell would express the Trpoperon all the time C) The cell would express the Trpoperon only when glucose is at low concentrations D) The cell would no longer need the trpoperon

  5. 5. What would happen to the expression of the trpoperon if E. coli had a missense mutation in the trpR gene such that the trpRepressor protein was unable to bind tryptophan, but otherwise functioned like the wild type version? A) The cell would be unable to synthesize tryptophan B) The cell would express the Trpoperon all the time C) The cell would express the Trpoperon only when glucose is at low concentrations D) The cell would no longer need the trpoperon

  6. 6. What would happen to the expression of the lacoperon if E. coli had a mutant version of the Lac Repressor that was unable to bind allolactose, but otherwise functioned like the wild type version? A) The lacoperon would never be expressed B) The lacoperon would expressed in low levels under some conditions, but never at high levels C) The lacoperon would always be expressed, but would vary between low and high expression depending on the level of cAMP D) The lacoperon would always be expressed, but would vary between low and high expression depending on the level of allolactose E) The lacoperon would be expressed at a high level at all times

  7. 7. What would happen to the expression of the lacoperon if E. coli had a mutant version of the Lac Operator that was unable to bind the Lac Repressor? A) The lacoperon would never be expressed B) The lacoperon would expressed in low levels under some conditions, but never at high levels C) The lacoperon would always be expressed, but would vary between low and high expression depending on the level of cAMP D) The lacoperon would always be expressed, but would vary between low and high expression depending on the level of allolactose E) The lacoperon would be expressed at a high level at all times

  8. 8. What would happen to the expression of the lacoperon if E. coli had a mutant version of the Catabolite Activator Protein (CAP) that was unable to bind cyclic AMP, but otherwise functioned like the wild type version? A) The lacoperon would never be expressed B) The lacoperon would expressed in low levels under some conditions, but never at high levels C) The lacoperon would always be expressed, but would vary between low and high expression depending on the level of cAMP D) The lacoperon would always be expressed, but would vary between low and high expression depending on the level of allolactose E) The lacoperon would be expressed at a high level at all times

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