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1
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
Choose the correct pair from the following
A
Exonucleases – Make cuts at specific positions within DNA
B
Ligases – Join the two DNA molecules
C
Polymerases – Break the DNA into fragments
D
Nucleases – Separate the two strands of DNA
2
NEET 2019
MCQ (Single Correct Answer)
+4
-1
DNA precipitation out of a mixture of bimolecules can be achieved by treatment with :
A
Methanol at room temperature
B
Chilled chloroform
C
Isopropanol
D
Chilled ethanol
3
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Following statements describe the characteristics of the enzyme Restriction Endonuclease. Identify the incorrect statement.
A
The enzyme cuts the sugar-phosphate backbone at specific sites on each strand
B
The enzyme recognizes a specific palindromic nucleotide sequence in the DNA
C
The enzyme cuts DNA molecule at identified position within the DNA
D
The enzyme binds DNA at specific sites and cuts only one of the two strands
4
NEET 2018
MCQ (Single Correct Answer)
+4
-1
The correct order of steps in Polymerase Chain Reaction (PCR) is
A
extension, denaturation, annealing
B
annealing, extension, denaturation
C
denaturation, extension, annealing
D
denaturation, annealing, extension
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