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Which of the following statements given above is/are correct regarding restriction endonucleases?
i. Hind II was the first restriction endonuclease discovered and cuts DNA at a specific sequence of six base pairs.
ii. The convention for naming these enzymes is the first 2 letters of the name comes from the genus and the second one letter come from the species of the prokaryotic cell from which they were isolated.
iii. Exonucleases and endonucleases are both types of restriction enzymes that function by cutting DNA at specific sites.
iv. Each restriction endonuclease can only recognize and cut palindromic sequences in the DNA.
- a)i and ii
- b)ii and iii
- c)i and iv
- d)i, iii, and iv
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Which of the following statements given above is/are correct regarding...
Overview of Restriction Endonucleases
Restriction endonucleases, also known as restriction enzymes, are crucial in molecular biology for manipulating DNA. Let's evaluate the statements provided regarding these enzymes.
Statement Analysis
- i. Hind II was the first restriction endonuclease discovered and cuts DNA at a specific sequence of six base pairs.
- This statement is incorrect. Hind II was not the first restriction enzyme discovered; that title goes to Hind II's predecessor, Hind I. Additionally, while Hind II does cut DNA at a specific site, it does not necessarily cut at a sequence of six base pairs.
- ii. The convention for naming these enzymes is the first 2 letters of the name comes from the genus and the second one letter comes from the species of the prokaryotic cell from which they were isolated.
- This statement is correct. For example, EcoRI is derived from Escherichia coli (genus: Eco, species: R).
- iii. Exonucleases and endonucleases are both types of restriction enzymes that function by cutting DNA at specific sites.
- This statement is incorrect. Exonucleases remove nucleotides from the ends of DNA, while endonucleases cut within the DNA strand. Only endonucleases are classified as restriction enzymes.
- iv. Each restriction endonuclease can only recognize and cut palindromic sequences in the DNA.
- This statement is correct. Most restriction enzymes recognize specific palindromic sequences in the DNA, which are sequences that read the same forwards and backwards.
Correct Statements
Based on the analysis, the correct statements are ii and iv. Thus, the correct answer is option 'c' (i and iv).
Restriction endonucleases, also known as restriction enzymes, are crucial in molecular biology for manipulating DNA. Let's evaluate the statements provided regarding these enzymes.
Statement Analysis
- i. Hind II was the first restriction endonuclease discovered and cuts DNA at a specific sequence of six base pairs.
- This statement is incorrect. Hind II was not the first restriction enzyme discovered; that title goes to Hind II's predecessor, Hind I. Additionally, while Hind II does cut DNA at a specific site, it does not necessarily cut at a sequence of six base pairs.
- ii. The convention for naming these enzymes is the first 2 letters of the name comes from the genus and the second one letter comes from the species of the prokaryotic cell from which they were isolated.
- This statement is correct. For example, EcoRI is derived from Escherichia coli (genus: Eco, species: R).
- iii. Exonucleases and endonucleases are both types of restriction enzymes that function by cutting DNA at specific sites.
- This statement is incorrect. Exonucleases remove nucleotides from the ends of DNA, while endonucleases cut within the DNA strand. Only endonucleases are classified as restriction enzymes.
- iv. Each restriction endonuclease can only recognize and cut palindromic sequences in the DNA.
- This statement is correct. Most restriction enzymes recognize specific palindromic sequences in the DNA, which are sequences that read the same forwards and backwards.
Correct Statements
Based on the analysis, the correct statements are ii and iv. Thus, the correct answer is option 'c' (i and iv).
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Community Answer
Which of the following statements given above is/are correct regarding...
To evaluate the correctness of the statements:
- Statement i is correct; Hind II was indeed the first restriction endonuclease characterized and it cuts DNA at a specific six-base pair sequence.
- Statement ii is incorrect; while The convention for naming these enzymes is the first letter of the name comes from the genus and the second two letters come from the species of the prokaryotic cell from which they were isolated.
- Statement iii is incorrect; while exonucleases and endonucleases are both nucleases, not all endonucleases are restriction enzymes. Restriction enzymes specifically cut at defined sequences, while exonucleases remove nucleotides from the ends of DNA.
- Statement iv is correct; restriction endonucleases indeed recognize and cut specific palindromic sequences.
Thus, the correct options that reflect true statements are i, ii, and iv, which corresponds to Option C.
Ncert Topic:
Ncert Line:
The first restriction endonuclease–Hind II, whose functioning depended on a specific DNA nucleotide sequence was isolated and characterised five years later. It was found that Hind II always cut DNA molecules at a particular point by recognising a specific sequence of six base pairs.
The convention for naming these enzymes is the first letter of the name comes from the genus and the second two letters come from the species of the prokaryotic cell from which they were isolated.
Exonucleases remove nucleotides from the ends of the DNA whereas, endonucleases make cuts at specific positions within the DNA
Each restriction endonuclease recognises a specific palindromic nucleotide sequences in the DNA.
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Question Description
Which of the following statements given above is/are correct regarding restriction endonucleases?i. Hind II was the first restriction endonuclease discovered and cuts DNA at a specific sequence of six base pairs.ii.The convention for naming these enzymes is the first 2 letters of the name comes from the genus and the second one letter come from the species of the prokaryotic cell from which they were isolated.iii. Exonucleases and endonucleases are both types of restriction enzymes that function by cutting DNA at specific sites.iv. Each restriction endonuclease can only recognize and cut palindromic sequences in the DNA.a)i and iib)ii and iiic)i and ivd)i, iii, and ivCorrect answer is option 'C'. 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 Which of the following statements given above is/are correct regarding restriction endonucleases?i. Hind II was the first restriction endonuclease discovered and cuts DNA at a specific sequence of six base pairs.ii.The convention for naming these enzymes is the first 2 letters of the name comes from the genus and the second one letter come from the species of the prokaryotic cell from which they were isolated.iii. Exonucleases and endonucleases are both types of restriction enzymes that function by cutting DNA at specific sites.iv. Each restriction endonuclease can only recognize and cut palindromic sequences in the DNA.a)i and iib)ii and iiic)i and ivd)i, iii, and ivCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements given above is/are correct regarding restriction endonucleases?i. Hind II was the first restriction endonuclease discovered and cuts DNA at a specific sequence of six base pairs.ii.The convention for naming these enzymes is the first 2 letters of the name comes from the genus and the second one letter come from the species of the prokaryotic cell from which they were isolated.iii. Exonucleases and endonucleases are both types of restriction enzymes that function by cutting DNA at specific sites.iv. Each restriction endonuclease can only recognize and cut palindromic sequences in the DNA.a)i and iib)ii and iiic)i and ivd)i, iii, and ivCorrect answer is option 'C'. Can you explain this answer?.
Which of the following statements given above is/are correct regarding restriction endonucleases?i. Hind II was the first restriction endonuclease discovered and cuts DNA at a specific sequence of six base pairs.ii.The convention for naming these enzymes is the first 2 letters of the name comes from the genus and the second one letter come from the species of the prokaryotic cell from which they were isolated.iii. Exonucleases and endonucleases are both types of restriction enzymes that function by cutting DNA at specific sites.iv. Each restriction endonuclease can only recognize and cut palindromic sequences in the DNA.a)i and iib)ii and iiic)i and ivd)i, iii, and ivCorrect answer is option 'C'. 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 Which of the following statements given above is/are correct regarding restriction endonucleases?i. Hind II was the first restriction endonuclease discovered and cuts DNA at a specific sequence of six base pairs.ii.The convention for naming these enzymes is the first 2 letters of the name comes from the genus and the second one letter come from the species of the prokaryotic cell from which they were isolated.iii. Exonucleases and endonucleases are both types of restriction enzymes that function by cutting DNA at specific sites.iv. Each restriction endonuclease can only recognize and cut palindromic sequences in the DNA.a)i and iib)ii and iiic)i and ivd)i, iii, and ivCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements given above is/are correct regarding restriction endonucleases?i. Hind II was the first restriction endonuclease discovered and cuts DNA at a specific sequence of six base pairs.ii.The convention for naming these enzymes is the first 2 letters of the name comes from the genus and the second one letter come from the species of the prokaryotic cell from which they were isolated.iii. Exonucleases and endonucleases are both types of restriction enzymes that function by cutting DNA at specific sites.iv. Each restriction endonuclease can only recognize and cut palindromic sequences in the DNA.a)i and iib)ii and iiic)i and ivd)i, iii, and ivCorrect answer is option 'C'. Can you explain this answer?.
Solutions for Which of the following statements given above is/are correct regarding restriction endonucleases?i. Hind II was the first restriction endonuclease discovered and cuts DNA at a specific sequence of six base pairs.ii.The convention for naming these enzymes is the first 2 letters of the name comes from the genus and the second one letter come from the species of the prokaryotic cell from which they were isolated.iii. Exonucleases and endonucleases are both types of restriction enzymes that function by cutting DNA at specific sites.iv. Each restriction endonuclease can only recognize and cut palindromic sequences in the DNA.a)i and iib)ii and iiic)i and ivd)i, iii, and ivCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET.
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Which of the following statements given above is/are correct regarding restriction endonucleases?i. Hind II was the first restriction endonuclease discovered and cuts DNA at a specific sequence of six base pairs.ii.The convention for naming these enzymes is the first 2 letters of the name comes from the genus and the second one letter come from the species of the prokaryotic cell from which they were isolated.iii. Exonucleases and endonucleases are both types of restriction enzymes that function by cutting DNA at specific sites.iv. Each restriction endonuclease can only recognize and cut palindromic sequences in the DNA.a)i and iib)ii and iiic)i and ivd)i, iii, and ivCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Which of the following statements given above is/are correct regarding restriction endonucleases?i. Hind II was the first restriction endonuclease discovered and cuts DNA at a specific sequence of six base pairs.ii.The convention for naming these enzymes is the first 2 letters of the name comes from the genus and the second one letter come from the species of the prokaryotic cell from which they were isolated.iii. Exonucleases and endonucleases are both types of restriction enzymes that function by cutting DNA at specific sites.iv. Each restriction endonuclease can only recognize and cut palindromic sequences in the DNA.a)i and iib)ii and iiic)i and ivd)i, iii, and ivCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Which of the following statements given above is/are correct regarding restriction endonucleases?i. Hind II was the first restriction endonuclease discovered and cuts DNA at a specific sequence of six base pairs.ii.The convention for naming these enzymes is the first 2 letters of the name comes from the genus and the second one letter come from the species of the prokaryotic cell from which they were isolated.iii. Exonucleases and endonucleases are both types of restriction enzymes that function by cutting DNA at specific sites.iv. Each restriction endonuclease can only recognize and cut palindromic sequences in the DNA.a)i and iib)ii and iiic)i and ivd)i, iii, and ivCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Which of the following statements given above is/are correct regarding restriction endonucleases?i. Hind II was the first restriction endonuclease discovered and cuts DNA at a specific sequence of six base pairs.ii.The convention for naming these enzymes is the first 2 letters of the name comes from the genus and the second one letter come from the species of the prokaryotic cell from which they were isolated.iii. Exonucleases and endonucleases are both types of restriction enzymes that function by cutting DNA at specific sites.iv. Each restriction endonuclease can only recognize and cut palindromic sequences in the DNA.a)i and iib)ii and iiic)i and ivd)i, iii, and ivCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice NEET tests.
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