In bacillus anthracis the protective antigen (PA)

A. is a protease that inhibits blood clotting
B. is a protese that inhibits cell growth
C. binds to cells
D. is an adenylate cyclase


Ans: C. binds to cells

Biology & Microbiology

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Which of the following does not illustrate the use of universal precaution methods in the handling of patients and body substances?

A. Healthcare worker with active, open lesions handling patients B. Mask and gloves C. Proper disposal of needles D. Sterilizing or disinfection of dental hand pieces E. Hand washing

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Which of the following best describes the relationship of insulin to glucagon?

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Bacterial smears are fixed before staining to

A) affix the cells to the slide. B) make their walls permeable. C) accept stain. D) make the cells visible.

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