Microbiology
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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When do bacteria normally regulate gene expression? | during transcription
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How is the lac operon induced? | lactose combines with lac repressor to inactivate it--RNA polymerase can then bind to the promoter and transcribe the lac operon
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How is the tryptophan operon repressed? | tryptophan binds to trp operon aporepressor fo form active complex--binds to trp operator and prevents RNA polymerase binding and transcription
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Describe feedback inhibition | associated with repressible operons where end product of peron pathway makes a complex with aporepressor to inhibit transcription
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Give 2 ways that inducible and repressible expression control differs | inducible--turn on expression--repressible--turn expression off--repressible systems have fine control over how much expression occurs
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What is a function of proteases? | rid the cell of unwanted proteins
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Created by:
heatherlvn
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