1
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
Which one of the following biomolecules is correctly characterized?
A
Lecithin - a phosphorylated glyceride found in cell membrane.
B
Palmitic acid - an unsaturated fatty acid with 18 carbon atoms.
C
Adenylic acid - adenosine with a glucose phosphate molecule.
D
Alanine amino acid - contains an amino group and an acidic group anywhere in the molecule.
2
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
Identify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centromeres.
A
Metaphase I
B
Metaphase II
C
Anaphase I
D
Anaphase II
3
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
For its action, nitrogenase requires
A
high input of energy
B
light
C
Mn2+
D
super oxygen radicals.
4
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
Read the following four statements (A $$-$$ D). phosphorylation involve uphill transport of protons across the membrane.
(A)  Both photophosphorylation and oxidative phosphorylation involve uphill transport of protons across the membrane.
(B)  In dicot stems, a new cambium originates from cells of pericycle at the time of secondary growth.
(C)  Stamens in flowers of Gloriosa and Petunia are polyandrous.
(D)  Symbiotic nitrogen fixers occur in free-living state also in soil.

How many of the above statements are right?
A
Two
B
Three
C
Four
D
One
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