Which of the following describes transcription factors?The addition or deletion of methyl and acetyl groups to regulate transcriptionProteins that specifically bind to promoter or enhancer regions to initiate transcriptionThe transcription initiation sites of DNA that bind RNA polymeraseDNA regulatory elements that actively repress the transcription of a geneO Varying sequences that are or are not included in the instructions to make a protein

Answered: The addition or deletion of methyl and…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Which of the following describes transcription factors?
The addition or deletion of methyl and acetyl groups to regulate transcription
Proteins that specifically bind to promoter or enhancer regions to initiate transcription
The transcription initiation sites of DNA that bind RNA polymerase
DNA regulatory elements that actively repress the transcription of a gene
O Varying sequences that are or are not included in the instructions to make a protein

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Answer.

Transcription is a process of formation of transcript (RNA). It takes place by the usual process of complementary base pairing catalyzed and scrutinized by the enzyme RNA polymerase. It occurs unidirectionally in which RNA chain or transcript is synthesized from the 5' to 3' direction.

Transcription is a selective process in which is transcribed segment of DNA is called a transcription unit.

In eukaryotes a transcription unit typically carries the information of just one gene and termed monocistronic transcription unit.

In prokaryotes a set of adjacent genes is often transcribed as a unit and term polycistronic transcription unit.