Multiple Choice
Which of the following best describes gene expression?
274
views
16. Regulation of Expression
Introduction to Regulation of Gene Expression
Struggling with General Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
How is the activity of a riboswitch controlled in gene expression regulation?
A
By altering the DNA sequence
B
By interacting with ribosomal RNA
C
By binding to a specific metabolite
D
By modifying histone proteins
Verified step by step guidance1
Understand that a riboswitch is a segment of messenger RNA (mRNA) that can regulate gene expression by changing its structure in response to binding a specific metabolite.
Recognize that riboswitches are typically located in the 5' untranslated region (5' UTR) of the mRNA, upstream of the coding sequence.
Identify that the binding of a specific metabolite to the riboswitch induces a conformational change in the mRNA structure.
This conformational change can either promote or inhibit the formation of a secondary structure that affects the ribosome's ability to bind to the mRNA, thus regulating translation.
Conclude that the activity of a riboswitch is controlled by its ability to bind to a specific metabolite, which in turn regulates gene expression by altering the mRNA's accessibility to the ribosome.
6:40mWatch next
Master Introduction to Regulation of Gene Expression with a bite sized video explanation from Jason
Start learningRelated Videos
Related Practice
Introduction to Regulation of Gene Expression practice set
Problem sets built by lead tutorsExpert video explanations