Flashcards : Gene Regulation in Bacteria — 10 cartes

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1Question

Gene regulation — definition?

Réponse

Process controlling gene expression levels.

2Question

Gene Regulation — definition?

Réponse

Process controlling gene expression ON/OFF.

3Question

Operon — structure?

Réponse

Cluster of genes with shared promoter and operator.

4Question

Operon — what?

Réponse

Cluster of related genes with single promoter.

5Question

Promoter — role?

Réponse

Binds RNA polymerase to start transcription.

6Question

Promoter — role?

Réponse

Initiates transcription by RNA polymerase binding.

7Question

Operator — function?

Réponse

Repressor binds to block transcription.

8Question

Structural Genes — function?

Réponse

Code for proteins, e.g., lacZ, lacY, lacA.

9Question

Repressor — role?

Réponse

Binds to operator to prevent transcription.

10Question

Lactose — function?

Réponse

Inducer that inactivates repressor, enables transcription.

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1. What is a repressor protein in gene regulation mechanisms?

2. What is the primary function of the repressor protein in the lac operon?

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