A ________ is a noncellular infectious agent with a protein coat wrapped around genetic material
a. vector
b. virus
c. viroid
d. prion
e. bacteriophage
b
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A cell structure that acts as a boundary between a cell and its environment
A) Cristae E) Flagella
B) Electron transport chain F) Plasma membrane
C) Microtubules G) Citric acid cycle
D) Glycolysis H) ATP
The ?-jelly roll of the Lpt system functions to
A. help translocate assembled LPS across the outer membrane of the bacterial cell. B. help attach the O-antigen to core oligosaccharide moieties during synthesis of LPS. C. help anchor the newly positioned LPS on the bacterial cell surface. D. help hide lipid A from the hydrophilic periplasm during LPS transport to the membrane.
Epidemic curves were prepared by plotting number of cases of disease on the Y-axis and dates on the X-axis. Graph would show a sustained increase in cases over a period of time until source is identified and eliminated.
A. Propagated Epidemic B. Point-source Epidemic C. Common-source Epidemic
All of the following are helminths except
A) Tapeworms B) Roundworms C) Trypanosomes D) Flukes E) Pinworms