A naked virus only has a/an ________.
A. nucleocapsid
B. capsomere
C. antigenic surface
D. envelope
Answer: A
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Which of the following flagellates has a single nucleus in the cyst and the typical curved, cytostomal fibril, which is called a shepherd's crook?
a. G. duodenalis b. C. mesnili c. D. fragilis d. E. hominis
In a mycorrhizal relationship, the fungal component can assist in providing phosphorus and water to the plant. The plant in turn provides the fungus with ________.
A. metal cofactors B. carbon dioxide C. nitrogen D. organic carbon
Variation in which of the following is not a major mechanism for regulation of blood pressure?
1.cardiac output 2.constriction of blood vessels 3.pacemaker signal strength 4.total blood volume
Urinalysis can be used to identify all of the
following EXCEPT a. a metabolic problem. b. prostate cancer. c. kidney disease. d. diabetes mellitus. e. cardiac damage.