Multiple Choice
In the context of organic chemistry reactions, what is typically released at each step of an electron transport chain?
3. Acids and Bases
Organic Chemistry Reactions
Struggling with Organic Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In the context of organic chemistry reactions, what causes the trp repressor protein (TrpR) to bind to DNA in the trp operon?
A
Phosphorylation of TrpR
B
Binding of tryptophan to TrpR
C
Acetylation of TrpR
D
Methylation of DNA
Verified step by step guidance1
Understand the role of the trp operon: The trp operon is a group of genes that are used to produce tryptophan in bacteria. It is regulated by the trp repressor protein (TrpR).
Identify the function of the trp repressor protein: TrpR is a regulatory protein that can bind to the operator region of the trp operon to inhibit transcription, thereby preventing the synthesis of tryptophan when it is not needed.
Recognize the mechanism of TrpR activation: The trp repressor protein is activated by the binding of tryptophan. When tryptophan levels are high, it binds to TrpR, causing a conformational change that allows TrpR to bind to the operator region of the trp operon.
Eliminate incorrect options: Phosphorylation, acetylation, and methylation are not involved in the binding of TrpR to DNA in the trp operon. These processes are more commonly associated with other types of protein or DNA regulation.
Conclude with the correct mechanism: The binding of tryptophan to TrpR is the key event that enables TrpR to bind to the DNA of the trp operon, thereby repressing the operon and regulating tryptophan synthesis.
0:29mWatch next
Master What you need to know about types of chemical reactions. with a bite sized video explanation from Johnny
Start learningRelated Videos
Related Practice
Organic Chemistry Reactions practice set
Problem sets built by lead tutorsExpert video explanations