How are inducible and repressible systems similar?
a. in both systems the regulatory molecule functions by binding to the operator
b. they are both on by default
c.they are both off by default
d. repressor gene is constitutively expressed
What effect does the presence of ample glucose (increased GLU) have on the amount of lac operon transcription?
a. It increases the cAMP concentration which in turn causes a decreased rate of transcription
b. it decreases the cAMP concentration which in turn causes a decrease rate of transcription
c.it has no effect on the rate of transcription
d. none of the choices are correct
tRNA processing?
a. 3’ ends with an A residue (adenosine)
b. Poly A tail added at 3’ end
c. Methylated GTP added at 5’ end
d. 5’ leader sequence is removed