Gene Expression Flashcards

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1
Q

Whats a promoter?

A

A DNA sequence located before the structural gene that RNA polymerase binds to

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2
Q

Whats an operator?

A

A DNA sequence that transcription factors bind to

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3
Q

What do repressors do?

A

Stop transcription

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4
Q

What do activators do?

A

Start transcripton

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5
Q

Whats a transcription factor?

A

A protein that binds to DNA and switches genes on or off by increasing or decreasing transcrption rate

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6
Q

What do structual genes do?

A

Code for useful proteins e.g., enzymes

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7
Q

What are the control elements?

A

Operator and promoter

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8
Q

What do regulatory genes do?

A

Code for a transcription factor

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9
Q

What does cAMP do?

A

Changes 3D structure of proteins

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