Operon

beta-galactosidase

breaks down lactose into allolactose

permease

transcribes a membrane protein that allows lactose to enter the cell

Lac I

creates the lac repressor, constitutive gene

lac repressor

cis-regulator, binds to operator blocking polymerase from binding to DNA

cAMP

trans-regulator, activates CAP, inverse relationship with glucose

CAP

trans-regulator, binds to CAP binding site, accelerates transcription

allolactose

inducer, binds to lac repressor inhibiting it from binding to DNA

inducible

what type of system is the lac operon

catabolic

is the lac operon catabolic or anabolic

positive feedback

does the lac operon work in a positive or negative feedback system

repressible

what type of system is the Trp operon

anabolic

is the Trp operon catabolic or anabolic

negative

is the Trp operon positive or negative feedback

tryptophan

corepressor, binds to the Trp repressor to block polymerase from binding