What is the first step in phage formation inside the bacterial cell?
A) tail fibers are added
B) DNA packaging as the viral heads assemble
C) adherence to the pilus
D) lysis
E) tail formation
Answer: B
Biology & Microbiology
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Aspiration of peritoneal fluid using a needle and syringe is:
a. acceptable. b. not acceptable.
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Which of the following is not an extraembryonic membrane?
a. yolk sac b. somite c. chorion d. amnion e. allantois
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Which of the following produce the type III secretion system virulence factor?
A) E. coli O157:H7 B) Shigella C) Salmonella D) both E. coli O157:H7 and Salmonella E) E. coli O157:H7, Shigella and Salmonella
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