Tryptophan Operon and Attenuation Video Lessons

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Problem: Identify the similarities between an inducible operon and a repressible operon. Check all that apply. a. Both operons often use attenuation and contain a transcribed leader sequence that participates in determining structural gene transcription. b. Both types of operons contain multiple genes that share a single promoter and a single operator sequence.c. Both types of operons contain a single gene that is controlled by a single promoter and a single operator sequence. d. Both types of regulatory systems have promoter and operator regulatory sequences. e. Both types of regulatory systems use allostery in regulating transcription.f. Both operons are bound by a repressor protein to block transcription and may also be bound by a positive regulator to help activate transcription.

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Inducible Operon: turned on in the presence of the metabolite (ex. lac operon is turned on in the presence of lactose)

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Problem Details
Identify the similarities between an inducible operon and a repressible operon. Check all that apply. 
a. Both operons often use attenuation and contain a transcribed leader sequence that participates in determining structural gene transcription. 
b. Both types of operons contain multiple genes that share a single promoter and a single operator sequence.
c. Both types of operons contain a single gene that is controlled by a single promoter and a single operator sequence. 
d. Both types of regulatory systems have promoter and operator regulatory sequences. 
e. Both types of regulatory systems use allostery in regulating transcription.
f. Both operons are bound by a repressor protein to block transcription and may also be bound by a positive regulator to help activate transcription.

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