Saturday, November 15, 2008
33 - AIIMS november 2008 biochemsitry questions
1q: dna without introns is?
A. B dna
b. Z dna
c. C dna
d. Mitochondrial dna
2q: all are true about glutathione except?
A. Converts hemoglobin to methemoglobin
b. Decreases free radicals
c. Helps in conjugation reaction
d. Co factor of various enzymes
3q: Ribosome has followin enzymatic activity?
A. Peptidyl transferase
b. Amino acyl t rna synthetase
4q: which enzyme is responsible for carboxylation reaction?
D. Thiamine pyrophosphate
5q: Glowing of firefly is due to?
d. Phospho creatinine
6q: in carboxylation of clotting factors by vit k which amino acid is carboxylated?
7q: synthesis of a immunoglobulin in membrane bound or independent form is determined by?
A. One turn two turn joining rule
b. Allelic exclusion
c. Class switching
d. Differential rna processing
8q: phosphorlase b is inhibited by?
9q: In metabolism of xenobiotics all of the followin reactions occour in phase one except?
10q: Which is not a second messenger?
b. Guanyl cyclase
11q: structure of proteins can be determined by all except?
A. Mass spectrometry
b. Nmr spectrometry
12q: Functions of thiamine?
A. Co enzyme of pyruvate dehydrogenase and alpha keto dehydrogenase
b. Co enzyme of trans ketolase
13q: replacing alanine by which amino acid will increase the absorbance of proteins at 280nm?