1
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
Match the organism with its use in biotechnology

(a) Bacillus thuringiensis (i) Cloning vector
(b) Thermus aquaticus (ii) Construction of first rDNA molecule
(c) Agrobacterium tumefaciens (iii) DNA polymerase
(d) Salmonella typhimurium (iv) Cry proteins

Select the correct option from the following:
A
(A) $$ \to $$ (iii), (B) $$ \to $$ (iv), (C) $$ \to $$ (i), (D) $$ \to $$ (ii)
B
(A) $$ \to $$ (ii), (B) $$ \to $$ (iv), (C) $$ \to $$ (iii), (D) $$ \to $$ (i)
C
(A) $$ \to $$ (iv), (B) $$ \to $$ (iii), (C) $$ \to $$ (i), (D) $$ \to $$ (ii)
D
(A) $$ \to $$ (iii), (B) $$ \to $$ (ii), (C) $$ \to $$ (iv), (D) $$ \to $$ (i)
2
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
3
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
4
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
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