Desensitization immunotherapies are least effective to treat allergies from which of the following?
A) pollen
B) milk
C) bee stings
D) dust mites
E) fire ant stings
Answer: B
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Heterotrophic stramenopiles that grow as a mesh of nutrient-absorbing filaments with cellulose cell walls are known as _______.
A. diatoms B. brown algae C. fungal molds D. water molds E. kelp
The major reason why there are fewer antiprotozoan drugs than antibacterial drugs is because
A. antiprotozoan drugs cost much more than antibacterial drugs to develop. B. antiprotozoan drugs are only effective when injected. C. it is much more difficult to develop selectively toxic antiprotozoan drugs since protozoan cells are eukaryotic. D. antiprotozoan drugs are not needed in the United States.
Phagocytosis of an infective bacterium by a white blood cell is a subset type of
A. exocytosis. B. facilitated diffusion. C. simple diffusion. D. active transport. E. endocytosis.
A water-vascular system that operates the tube feet is characteristic of the ____
a. arthropods b. annelids c. chordates d. mollusks e. echinoderms