1
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
Antiparallel strands of a DNA molecule means that-
A
The phosphate groups at the start of two DNA strands are in opposite position (pole)
B
One strand turns anti-clockwise
C
One strand turns clockwise
D
The phosphate groups of two DNA stands, at their ends, share the same position
2
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
Amino acid sequence, in protein synthesis is decided by the sequence of -
A
cDNA
B
mRNA
C
tRNA
D
rRNA
3
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
E. coli cells with a mustard z gene of the lac operon cannot grow in medium containing only lactose as the source of energy because -
A
They cannot transport lactose from the medium into the cell
B
They cannot synthesize functional beta galactosidase
C
In the presence of glucose, E. coli cells do not utilize lactose
D
The lac operon is constitutively active in these cells
4
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
Telomerase is an enzyme which is a -
A
RNA
B
Repetitive DNA
C
Simple protein
D
Ribonucleoprotein
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