Which tissue type is most suited to areas of the body in which the cells need continuous replacement to repair damage from daily wear and tear?
A) Muscle
B) Epithelial
C) Connective
D) Nerve
B
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How do cytokines function?
A. They bind directly to microbes to enhance their chance of being ingested (phagocytosed). B. They are secreted in the phagolysosomes of neutrophils to effect killing of ingested microbes. C. They are secreted by one cell type. They then bind to a receptor on target cell causing a signal within that cell that turns on (or off) certain genes to achieve a response. D. They work as a series of serum proteins to produce a hole in microbes to directly lyse them.
The Florida panther, as a symbol of Florida's conservation campaign, serves as a(n)
A. indicator species. B. flagship species. C. endemic species. D. keystone species. E. umbrella species.
In the respiratory tract, the smallest and most numerous passageways are the ___________.
a) tracheas b) bronchioles c) bronchi d) larynxes
Which of these factors result(s) in the emergence of new pathogens?
a. human behavior b. economic development c. international travel d. all of the above