Regulation of Gene Expression

AP Biology· difficulty 2/5

Transcription factors are

A
$Small RNAs that base-pair with mRNA to block or degrade transcripts$
B
$Proteins that bind to specific DNA sequences to activate or repress transcription$
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C
$Enzymes that synthesize RNA from a DNA template during transcription$
D
$RNA-protein complexes that translate mRNA into protein at the ribosome$

Explanation

TFs are sequence-specific DNA-binding proteins that recruit (or block) the transcription machinery.

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