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1
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Which one of the following pairs of codons is correctly matched with their function or the signal for the particular amino acid ?
A
UUA, UCA — Leucine
B
AUG, ACG — Start/Methionine
C
UAG, UGA — Stop
D
GUU, GCU — Alanine
2
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Polysome is formed by
A
several ribosomes attached to a single mRNA
B
many ribosomes attached to a strand of endoplasmic reticulum
C
a ribosome with several subunits
D
ribosomes attached to each other in a linear arrangement
3
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
In the DNA molecule:
A
the total amount of purine nucleotides and pyrimidine nucleotides is not always equal
B
there are two strands which run antiparallel one in 5'→ 3' direction and other in 3'→ 5'
C
there are two strands which run parallel in the 5'→ 3' direction
D
the proportion of adenine in relation to thymine varies with the organism
4
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
Which antibiotic inhibits interaction between tRNA and mRNA during bacterial protein synthesis ?
A
Neomycin
B
Erythromycin
C
Tetracycline
D
Streptomycin
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