62. Which of the following mechanism is NOT how bacteria defend against phage infection?
(A) bacteria
with mutant receptors unrecognizable to phages
(B) restriction enzymes degrade exogenous genetic
elements
(C) type II topoisomerases facilitate conformational changes of DNA during replication and
transcription
(D) CRISPR-Cas system
(E) none
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統計: A(3), B(1), C(32), D(1), E(5) #3094176
統計: A(3), B(1), C(32), D(1), E(5) #3094176