A protozoan having a flagellum would be classified in the genus ________.
A. Plasmodium
B. Entamoeba
C. Toxoplasma
D. Enterobius
E. Trypanosoma
Answer: E
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The secretory systems of Type III and Type IV pathogenic bacteria differ in their mode of attacking cells in what way?
A. Type III systems bind to the cellular membrane by slimy mucilage and toxins diffuse across the membrane, whereas Type IV systems infect cells using pili as transfer tubes. B. Type III systems infect cells using pili as transfer tubes whereas Type IV systems bind to the cellular membrane by slimy mucilage and toxins diffuse across the membrane. C. Both systems attach to cells in the same way but they differ merely in the chemicals that they inject into the host cell. D. Type III systems use flagella modified as "syringes" to inject materials into cells they are infecting whereas Type IV systems use modified pili as transfer tubes. E. Type III systems use modified pili as transfer tubes whereas Type IV systems use flagella modified as "syringes" to inject materials into cells they are infecting.
Tropical forests receive ____
a. intense solar radiation and heavy rainfall b. moderate solar radiation and heavy rainfall c. intense solar radiation and virtually no rainfall d. moderate solar radiation and moderate rainfall e. low solar radiation and heavy rainfall
Four of the five statements listed below are portions
of a well-known theory. Select the exception. a. Cells are the structural and functional components of living things. b. Cells arise from preexisting cells. c. All organisms are composed of cells. d. Cells are the basic living unit of organization of living things. e. All cells have a nucleus.
Male birds often perform a special dance or set of physical displays to attract females. This would be an example of a behavioral isolation mechanism.
Answer the following statement true (T) or false (F)