Q. No.Which of the following can act as molecular scissors?
1. Restriction enzymes
2. DNA ligase
3. RNA polymerase
4. DNA polymerase
1. Restriction enzymes
2. DNA ligase
3. RNA polymerase
4. DNA polymerase
Subtopic: Restriction Enzymes - Main Enzymes |
94%
From NCERT
NEET - 2023
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In the following palindromic base sequences of DNA, which one can be cut easily by particular restriction enzyme?
1. 5'GTATTC3' ; 3'CATAAG5'
2. 5'GATACT3' ; 3'CTATGA5'
3. 5'GAATTC3' ; 3'CTTAAG5'
4. 5'CTCAGT3' ; 3'GAGTCA5'
Subtopic: Restriction Enzymes - Main Enzymes |
93%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
Give below are two statements:
In the light of the above statements, choose the most appropriate answer from the options given below:
1. Statement I is incorrect but Statement II is correct.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct but Statement II is incorrect.
| Statement I: | Restriction endonucleases recognise specific sequence to cut DNA known as palindromic nucleotide sequence. |
| Statement II: | Restriction endonucleases cut the DNA strand a little away from the centre of the Palindromic site. |
In the light of the above statements, choose the most appropriate answer from the options given below:
1. Statement I is incorrect but Statement II is correct.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct but Statement II is incorrect.
Subtopic: Restriction Enzymes - Main Enzymes |
84%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
Given below are two statements: One is labeled as Assertion (A) and the other is labeled as Reason (R)
| Assertion (A): | Restriction enzyme is a type of endonuclease |
| Reason (R): | Restriction enzyme cuts the two stands of DNA at specific positions within the DNA |
In the light of the above statements, choose the correct answer from the options given below:
| 1. | (A) is correct but (R) is not correct. |
| 2. | (A) is not correct but (R) is correct. |
| 3. | Both (A) and (R) are correct and (R) is the correct explanation of (A). |
| 4. | Both (A) and (R) are correct but (R) is not the correct explanation of (A). |
Subtopic: Restriction Enzymes - Main Enzymes |
72%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
Given below are two statements one is labelled as Assertion (A) and the other is labelled as Reason (R).
In light of the above statements, choose the correct answer from the options given below:
| Assertion (A): | When a particular restriction enzyme cuts strands of DNA, overhanging stretches or sticky ends are formed. |
| Reason (R): | Some restriction enzymes cut the strand of DNA a little away from the centre of palindromic site. |
In light of the above statements, choose the correct answer from the options given below:
| 1. | Both (A) and (R) are true and (R) correctly explains (A). |
| 2. | Both (A) and (R) are true and (R) does not correctly explain (A). |
| 3. | (A) is true, (R) is false. |
| 4. | (A) is false, (R) is true. |
Subtopic: Restriction Enzymes - Main Enzymes |
60%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
A specific recognition sequence identified by endonucleases to make cuts at specific positions within the DNA is:
1. Palindromic Nucleotide sequences
2. Poly(A) tail sequences
3. Degenerate primer sequence
4. Okazaki sequences
Subtopic: Restriction Enzymes - Main Enzymes |
91%
From NCERT
NEET - 2021
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
Which of the following restriction enzymes produces blunt ends?
1. Sal l
2. Eco RV
3. Xho
4. Hind lll
Subtopic: Restriction Enzymes - Main Enzymes |
51%
NEET - 2016
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NEET 2023 - Target Batch - Aryan Raj Singh
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Given below is a sample of a portion of DNA strand giving the base sequence on the opposite strands. What is so, special shown in it?
5’___GAATTC___3’
3’___CTTAAG__5’
5’___GAATTC___3’
3’___CTTAAG__5’
1. Deletion mutation
2. Start codon at the 5' end
3. Palindromic sequence of base pairs
4. Replication completed
Subtopic: Tools: Enzymes: II | Restriction Enzymes - Main Enzymes | Tools |
95%
From NCERT
AIPMT - 2011
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
There is a restriction endonuclease called Eco RI. What does the 'co' part in it stand for?
1. Coelom
2. Coenzyme
3. Coli
4. Colon
1. Coelom
2. Coenzyme
3. Coli
4. Colon
Subtopic: Restriction Enzymes - Main Enzymes |
90%
From NCERT
AIPMT - 2011
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NEET 2023 - Target Batch - Aryan Raj Singh
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The linking of the antibiotic resistance gene with the plasmid vector became possible with:
1. DNA ligase
2. endonucleases
3. DNA polymerase
4. exonucleases
Subtopic: Tools: Enzymes: II | Restriction Enzymes - Main Enzymes | Separation and Isolation of DNA fragments | Tools |
88%
From NCERT
AIPMT - 2008
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
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