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Which of the following is(are) INCORRECT in the regulation of the trp operon ?
- a)It is an example of a negatively controlled repressible operon
- b)The amino acid Trp inactivates the repressor
- c)The amino acid Trp induces the operon
- d)The repressor binds to the operator in the presence of amino acid Trp
Correct answer is option 'B,C'. Can you explain this answer?
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Which of the following is(are) INCORRECT in the regulation of the trp ...
Incorrect statements in the regulation of the trp operon:
b) The amino acid Trp inactivates the repressor
c) The amino acid Trp induces the operon
Explanation:
The trp operon in bacteria is involved in the regulation of the synthesis of the amino acid tryptophan (Trp). It is an example of a negatively controlled repressible operon, which means that the operon is normally active but can be repressed when a specific molecule is present.
a) It is an example of a negatively controlled repressible operon:
- This statement is correct. The trp operon is an example of a negatively controlled repressible operon because it is normally active but can be repressed by the presence of tryptophan.
b) The amino acid Trp inactivates the repressor:
- This statement is incorrect. In the trp operon, the repressor protein is inactive in the absence of tryptophan. When tryptophan is present, it binds to the repressor, causing a conformational change that allows it to bind to the operator sequence and prevent transcription of the genes in the operon. Therefore, tryptophan activates the repressor rather than inactivating it.
c) The amino acid Trp induces the operon:
- This statement is incorrect. The presence of tryptophan actually represses the trp operon. When tryptophan is abundant, it binds to the repressor protein, activating it and causing it to bind to the operator sequence. This binding prevents the RNA polymerase from transcribing the genes in the operon, effectively shutting down tryptophan synthesis.
d) The repressor binds to the operator in the presence of amino acid Trp:
- This statement is correct. In the presence of tryptophan, the repressor protein undergoes a conformational change and binds to the operator sequence, preventing RNA polymerase from transcribing the genes in the operon.
In summary, the incorrect statements in the regulation of the trp operon are that the amino acid Trp inactivates the repressor (statement b) and that Trp induces the operon (statement c).
b) The amino acid Trp inactivates the repressor
c) The amino acid Trp induces the operon
Explanation:
The trp operon in bacteria is involved in the regulation of the synthesis of the amino acid tryptophan (Trp). It is an example of a negatively controlled repressible operon, which means that the operon is normally active but can be repressed when a specific molecule is present.
a) It is an example of a negatively controlled repressible operon:
- This statement is correct. The trp operon is an example of a negatively controlled repressible operon because it is normally active but can be repressed by the presence of tryptophan.
b) The amino acid Trp inactivates the repressor:
- This statement is incorrect. In the trp operon, the repressor protein is inactive in the absence of tryptophan. When tryptophan is present, it binds to the repressor, causing a conformational change that allows it to bind to the operator sequence and prevent transcription of the genes in the operon. Therefore, tryptophan activates the repressor rather than inactivating it.
c) The amino acid Trp induces the operon:
- This statement is incorrect. The presence of tryptophan actually represses the trp operon. When tryptophan is abundant, it binds to the repressor protein, activating it and causing it to bind to the operator sequence. This binding prevents the RNA polymerase from transcribing the genes in the operon, effectively shutting down tryptophan synthesis.
d) The repressor binds to the operator in the presence of amino acid Trp:
- This statement is correct. In the presence of tryptophan, the repressor protein undergoes a conformational change and binds to the operator sequence, preventing RNA polymerase from transcribing the genes in the operon.
In summary, the incorrect statements in the regulation of the trp operon are that the amino acid Trp inactivates the repressor (statement b) and that Trp induces the operon (statement c).
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Which of the following is(are) INCORRECT in the regulation of the trp operon ?a)It is an example of a negatively controlled repressible operonb)The amino acid Trp inactivates the repressorc)The amino acid Trp induces the operond)The repressor binds to the operator in the presence of amino acid TrpCorrect answer is option 'B,C'. Can you explain this answer?
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Which of the following is(are) INCORRECT in the regulation of the trp operon ?a)It is an example of a negatively controlled repressible operonb)The amino acid Trp inactivates the repressorc)The amino acid Trp induces the operond)The repressor binds to the operator in the presence of amino acid TrpCorrect answer is option 'B,C'. Can you explain this answer? for IIT JAM 2024 is part of IIT JAM preparation. The Question and answers have been prepared according to the IIT JAM exam syllabus. Information about Which of the following is(are) INCORRECT in the regulation of the trp operon ?a)It is an example of a negatively controlled repressible operonb)The amino acid Trp inactivates the repressorc)The amino acid Trp induces the operond)The repressor binds to the operator in the presence of amino acid TrpCorrect answer is option 'B,C'. Can you explain this answer? covers all topics & solutions for IIT JAM 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is(are) INCORRECT in the regulation of the trp operon ?a)It is an example of a negatively controlled repressible operonb)The amino acid Trp inactivates the repressorc)The amino acid Trp induces the operond)The repressor binds to the operator in the presence of amino acid TrpCorrect answer is option 'B,C'. Can you explain this answer?.
Which of the following is(are) INCORRECT in the regulation of the trp operon ?a)It is an example of a negatively controlled repressible operonb)The amino acid Trp inactivates the repressorc)The amino acid Trp induces the operond)The repressor binds to the operator in the presence of amino acid TrpCorrect answer is option 'B,C'. Can you explain this answer? for IIT JAM 2024 is part of IIT JAM preparation. The Question and answers have been prepared according to the IIT JAM exam syllabus. Information about Which of the following is(are) INCORRECT in the regulation of the trp operon ?a)It is an example of a negatively controlled repressible operonb)The amino acid Trp inactivates the repressorc)The amino acid Trp induces the operond)The repressor binds to the operator in the presence of amino acid TrpCorrect answer is option 'B,C'. Can you explain this answer? covers all topics & solutions for IIT JAM 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is(are) INCORRECT in the regulation of the trp operon ?a)It is an example of a negatively controlled repressible operonb)The amino acid Trp inactivates the repressorc)The amino acid Trp induces the operond)The repressor binds to the operator in the presence of amino acid TrpCorrect answer is option 'B,C'. Can you explain this answer?.
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Which of the following is(are) INCORRECT in the regulation of the trp operon ?a)It is an example of a negatively controlled repressible operonb)The amino acid Trp inactivates the repressorc)The amino acid Trp induces the operond)The repressor binds to the operator in the presence of amino acid TrpCorrect answer is option 'B,C'. Can you explain this answer?, a detailed solution for Which of the following is(are) INCORRECT in the regulation of the trp operon ?a)It is an example of a negatively controlled repressible operonb)The amino acid Trp inactivates the repressorc)The amino acid Trp induces the operond)The repressor binds to the operator in the presence of amino acid TrpCorrect answer is option 'B,C'. Can you explain this answer? has been provided alongside types of Which of the following is(are) INCORRECT in the regulation of the trp operon ?a)It is an example of a negatively controlled repressible operonb)The amino acid Trp inactivates the repressorc)The amino acid Trp induces the operond)The repressor binds to the operator in the presence of amino acid TrpCorrect answer is option 'B,C'. Can you explain this answer? theory, EduRev gives you an
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