1
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
Mutations can be induced with :
A
Gamma radiation
B
Infra Red radiations
C
IAA
D
Ethylene
2
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its root tip cells?
A
42
B
63
C
84
D
21
3
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
Which one of the following acts as a physiological barrier to the entry of microorganisms in human body?
A
Epithelium of urogenital tract
B
Tears
C
Monocytes
D
Skin
4
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
At which stage of HIV infection does one usually show symptoms of AIDS?
A
When the infecting retrovirus enters host cells
B
When viral DNA is produced by reverse trancriptase
C
When HIV replicates rapidly in helper T-lymphocytes and damages large number of these
D
Within 15 day of sexual contact with an infected person
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