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In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).
Read the statements carefully, and mark the correct answer.
Assertion(A): 'Lac Operon Model' is applicable only to E.coli.
Reason(R): E.coli lacks a definite nucleus.
Read the statements carefully, and mark the correct answer.
Assertion(A): 'Lac Operon Model' is applicable only to E.coli.
Reason(R): E.coli lacks a definite nucleus.
- a)Both assertion and reason are true and reason is the correct explanation of assertion.
- b)Both assertion and reason are true but reason is not the correct explanation of assertion.
- c)Assertion is true but reason is false.
- d)Both assertion and reason are false.
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
In the following question, a statement of Assertion(A) is given follow...
In E. coli, synthesis of β galactosidase, an enzyme meant for hydrolysis of lactose into glucose and galactose, has been studied in considerable detail.
Lactose → β galactosidase glucose + galactose
If β galactosides (e.g., lactose) are not supplied to E. coli cells, the presence of β galactosidase is hardly detectable, but as soon as lactose in added, production of enzyme β galactosidase increases as much as 10,000 times. The enzyme quantity again fall down as quickly as the substance (i.e. lactose) is removed. Such enzymes, whose synthesis can be induced by adding, substrate are known as "inducible enzymes". F. Jacob and J. Monod in 1961, on the basis of their study on the inducible system for the synthesis of β galactosidase enzyme in E. coli, proposed a model in order to explain the induction or repression of enzyme synthesis. The model is popularly known as "operon model", E. coli like other bacteria has incipient nucleus, i.e. nucleoid.
Lactose → β galactosidase glucose + galactose
If β galactosides (e.g., lactose) are not supplied to E. coli cells, the presence of β galactosidase is hardly detectable, but as soon as lactose in added, production of enzyme β galactosidase increases as much as 10,000 times. The enzyme quantity again fall down as quickly as the substance (i.e. lactose) is removed. Such enzymes, whose synthesis can be induced by adding, substrate are known as "inducible enzymes". F. Jacob and J. Monod in 1961, on the basis of their study on the inducible system for the synthesis of β galactosidase enzyme in E. coli, proposed a model in order to explain the induction or repression of enzyme synthesis. The model is popularly known as "operon model", E. coli like other bacteria has incipient nucleus, i.e. nucleoid.
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In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).Read the statements carefully, and mark the correct answer.Assertion(A): 'Lac Operon Model' is applicable only to E.coli.Reason(R): E.coli lacks a definite nucleus.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Both assertion and reason are false.Correct answer is option 'B'. Can you explain this answer?
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In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).Read the statements carefully, and mark the correct answer.Assertion(A): 'Lac Operon Model' is applicable only to E.coli.Reason(R): E.coli lacks a definite nucleus.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Both assertion and reason are false.Correct answer is option 'B'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).Read the statements carefully, and mark the correct answer.Assertion(A): 'Lac Operon Model' is applicable only to E.coli.Reason(R): E.coli lacks a definite nucleus.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Both assertion and reason are false.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).Read the statements carefully, and mark the correct answer.Assertion(A): 'Lac Operon Model' is applicable only to E.coli.Reason(R): E.coli lacks a definite nucleus.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Both assertion and reason are false.Correct answer is option 'B'. Can you explain this answer?.
In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).Read the statements carefully, and mark the correct answer.Assertion(A): 'Lac Operon Model' is applicable only to E.coli.Reason(R): E.coli lacks a definite nucleus.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Both assertion and reason are false.Correct answer is option 'B'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).Read the statements carefully, and mark the correct answer.Assertion(A): 'Lac Operon Model' is applicable only to E.coli.Reason(R): E.coli lacks a definite nucleus.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Both assertion and reason are false.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).Read the statements carefully, and mark the correct answer.Assertion(A): 'Lac Operon Model' is applicable only to E.coli.Reason(R): E.coli lacks a definite nucleus.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Both assertion and reason are false.Correct answer is option 'B'. Can you explain this answer?.
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