1
AIPMT 2010 Mains
MCQ (Single Correct Answer)
+4
-1
In genetic engineering, a DNA segment (gene) of interest,is transferred to the host cell through a vector. Consider the following four agents (A-D) in this regard and select the correct option about which one or more of these can be used as a vecotr / vectors –
(A) a bacterium
(B) plasmid
(C) plasmodium
(D) bacteriophage
A
(B) and (D) only
B
(A) and (C) only
C
(A), (B) and (D) only
D
(A) only
2
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
Stirred-tank bioreactors have been designed for –
A
Purification of the product
B
Availability of oxygen throughout the process
C
Ensuring anaerobic conditions in the culture vessel
D
Addition of preservatives to the product
3
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
Which one of the following is used as vector for cloning genes into higher organisms ?
A
Retrovirus
B
Salmonella typhimurium
C
Rhizopus nigricans
D
Baculovirus
4
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
Restriction endonucleases are enzymes which –
A
recognize a specific nucleotide sequence for binding of DNA ligase
B
remove nucleotides from the ends of the DNA molecule
C
restrict the action of the enzyme DNA polymerase
D
make cuts at specific positions within the DNA molecule

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