What cell type(s) are found in nervous tissue?
a. neurons only
b. glial cells only
c. squamous cells only
d. both neurons and glial cells
e. both glial cells and squamous cells
ANSWER: d
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The evolution of many species from a single common ancestor is called
a. adaptive radiation b. punctuated equilibrium c. genetic drift d. disruptive selection e. microevolution
Typhoid fever differs from salmonellosis in that in typhoid fever
A) the microorganisms multiply within macrophages. B) the incubation period is much longer. C) the symptoms are due to infection of the gallbladder. D) infection is spread only in the feces of domesticated animals. E) infection occurs due to ingestion of endospores.
During cytokinesis, a critical step in septation is the assembly of the
A. spindle body. B. replisome. C. cytoskeletal spiral. D. Z ring.
The most important defense of the cardiovascular system against infection is ________.
A. fever B. lymphocytes in the blood C. lymph nodes D. the blood-brain barrier