What Protein Influences the Ability of RNA Polymerase to Transcribe

Question

What protein influences the ability of RNA polymerase to transcribe genes?
A)DNA polymerases
B)DNA helicases
C)transcription factors
D)snRNPs
E)tRNA

Accepted Answer

Transcription factors are proteins that bind to specific DNA sequences near the promoter region of genes, and can either enhance or inhibit the ability of RNA polymerase to transcribe those genes. They do this by either recruiting RNA polymerase to the promoter region or blocking its access.

Note: None of the other options listed have a direct influence on RNA polymerase activity during transcription. DNA polymerases are involved in DNA replication, DNA helicases unwind the DNA double helix, snRNPs are involved in splicing, and tRNA is involved in translation.