Questions 1-8: Match descriptions to terms. More than one description may apply to a term. Term:...

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Questions 1-8: Match descriptions to terms. More than one description may apply to a term. Term: CAP site lacz olacy activato

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CAP site - Activator, positive regulator

Lac operon is consisting of 2 kinds of genes: 1) structural genes- LacZ, LacY, LacA

2) Control genes- Operator, promoter, regulator.

Two regulatory proteins are involved in Lac operon. One is activator called CAP, other is repressor.

E. coli contains a protein called Catabolite activator protein (CAP) which binds to cAMP to form cAMP-CAP complex. This complex is bound to CAP site, which acts as positive regulator, activating RNA polymerase to initiate transcription.

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