59) A regulator (like the activated trp repressor) binds to a co-repressor (like

Question

59) A regulator (like the activated trp repressor) binds to a co-repressor (like
tryptophan). Together, they bind an operator (like the that 5’ of the trp
operon). The 3’ mRNA is no longer transcribed. This regulation is an example
of
60) A regulator (like the lac repressor) binds to an operator (like the operator 5’
of the lac operon) and the 3’ mRNA is not transcribed. When a small
molecule co-activator (like allalactose) binds the repressor, it falls off the
operator and the 3’ mRNA can be transcribed. This regulation is an example
of
61) A regulator (like the catabolite activator protein (CAP)) binds to a small
molecule co-activator (like cAMP) and then binds a promoter (like that 5’
from the lac operon). The 3’ mRNA is transcribed strongly. This regulation is
an example of

Explanation / Answer

59. negative regulation 60. positive regulation 61.positive regulation

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