1
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
Change Language
The chitinous exoskeleton of arthropods is formed by the polymerisation of
A
N - acetyl glucosamine
B
lipoglycans
C
keratin sulphate and chondrotin sulphate
D
D - glucosamine.
2
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
Change Language
Arrange the following events of meiosis in correct sequence
(i)  Crossing over
(ii)  Synapsis
(iii)  Terminalisation of chiasmata
(iv)  Disappearance of nucleolus
A
(i), (ii), (iii), (iv)
B
(ii), (iii), (iv), (i)
C
(ii), (i), (iv), (iii)
D
(ii), (i), (iii), (iv)
3
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following biomolecules does have a phosphodiester bond?
A
Amino acids in a polypeptide
B
Nucleic acids in a nucleotide
C
Fatty acids in a diglyceride
D
Monosaccharides in a polysaccharide
4
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
Change Language
The introduction of t-DNA into plants involves -
A
Altering the pH of the soil, then heatshocking the plants
B
Infection of the plant by Agrobacterium tumefaciens
C
Exposing the plants to cold for a brief period
D
Allowing the plant roots to stand in water