Question

1. Name the 3 parts that comprise positive regulation. 2. Name the 3 parts that comprise...

1. Name the 3 parts that comprise positive regulation.

2. Name the 3 parts that comprise negative regulation.

options:

operator site, promoter site, repressor protein, effector, activator protein

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Homework Answers

Answer #1

1. Promoter, activator, effector

2. Operator, repressor, effector

Note -

Promoter is the region on DNA where RNA polymerase binds to initiate transcription of downstream genes.

Effectors are the molecules which can increase or decrease the rate of transcription of a gene. They can be activators or repressors.

Activators are the proteins which bind to sequences called as enhancers on DNA to increase the rate of transcription of the genes associated with that enhancer element.

Operator is the site on DNA where repressor protein binds to decrease or inhibit the transcription of downstream gene.

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