Multiple Choice
In the context of organic chemistry, why are enzymes crucial for chemical reactions in living organisms?
1. A Review of General Chemistry
Intro to Organic Chemistry
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 the trp operon, what would be the effect of a mutation in the operator region?
A
The operon would be continuously expressed, regardless of tryptophan levels.
B
The operon would only be expressed in the presence of high tryptophan levels.
C
The operon would be unaffected by the mutation and function normally.
D
The operon would be permanently repressed, preventing any expression.
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 when it is not available in the environment. It is regulated by the presence of tryptophan, which acts as a corepressor.
Identify the function of the operator region: The operator is a segment of DNA where the repressor protein binds. When tryptophan levels are high, the repressor binds to the operator, preventing transcription of the operon.
Consider the effect of a mutation in the operator region: A mutation in the operator region could prevent the repressor from binding effectively, leading to continuous expression of the operon regardless of tryptophan levels.
Evaluate the possible outcomes: If the operator cannot bind the repressor, the operon would be continuously expressed. This is because the repressor cannot inhibit transcription without binding to the operator.
Conclude the impact of the mutation: The mutation in the operator region would likely result in the operon being continuously expressed, as the regulatory mechanism is disrupted.
2:18mWatch next
Master Organic molecules in your everyday life. with a bite sized video explanation from Johnny
Start learningRelated Videos
Related Practice
Intro to Organic Chemistry practice set
Problem sets built by lead tutorsExpert video explanations