Medical MCQs

5099 MCQs  (Page 26 of 510)

Generation of free radicals occurs by all of the following mechanism EXCEPT_____________?
A. Normal metabolism
B. Oxygen toxicity
C. Reperfusion after ischemic injury
D. All of the above
Enzymes increase reaction rates by______________?
A. Altering the free energy of the action
B. Inhibiting the backward reaction
C. Enhancing the forward reaction
D. Decreasing the energy of activation
In molecular cloning, Blue White screening is used for_______________?
A. To screen for recombinant vectors
B. To detect gene mutations
C. To identify desired chromosomal dna insert in plasmid vectors
D. To detect host dna in situ