Multiple Choice
Which of the following is true about promoter sequences in transcription?
283
views
15. Gene Expression
Introduction to Transcription
Struggling with General Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following occurs when RNA polymerase attaches to the promoter region of DNA?
A
Initiation of transcription begins
B
RNA polymerase detaches from the DNA
C
DNA replication is initiated
D
Translation of mRNA into protein starts
Verified step by step guidance1
Understand the role of RNA polymerase: RNA polymerase is an enzyme responsible for synthesizing RNA from a DNA template during the process of transcription.
Identify the promoter region: The promoter is a specific sequence of DNA that signals RNA polymerase where to bind and start transcription. It is located upstream of the gene to be transcribed.
Clarify the process of transcription initiation: When RNA polymerase binds to the promoter region, it unwinds the DNA strands locally and begins synthesizing RNA by matching complementary RNA nucleotides to the DNA template strand.
Eliminate incorrect options: RNA polymerase detaching from DNA occurs at the end of transcription, not the beginning. DNA replication is a separate process involving DNA polymerase, not RNA polymerase. Translation of mRNA into protein occurs after transcription, not during the promoter binding step.
Conclude that the correct answer is 'Initiation of transcription begins,' as this describes the process that occurs when RNA polymerase attaches to the promoter region of DNA.
5:51mWatch next
Master Introduction to Transcription with a bite sized video explanation from Jason
Start learningRelated Videos
Related Practice
Introduction to Transcription practice set
Problem sets built by lead tutorsExpert video explanations