Gene Expression and Regulation MCQ

1. In the lactose operon of e. coli, the product of the laci gene is a(n) _____ of transcription.

Competitive inhibitor

Repressor

Negative regulator

Alternative splicing

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2. _______ are present in prokaryotes, and bind to and direct the polymerase to specific promoters.

Ribosomes Proteases

Sigma factors

Sporulation proteins

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