Which of the following antibodies is (are) involved in opsonization?
A. IgG1
B. IgD
C. IgG3
D. Only IgG1 and IgG3
Answer: D
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Four of the five answers listed below are functions performed by the same organ. Select the exception
a. regulates pH of body fluids b. removes toxic substances from the blood c. storage and interconversion of carbohydrates, fats, and proteins d. inactivates hormones e. formation of urea from nitrogenous waste
As part of your research project, you travel to an island to learn more about the habitats and relationships of flies, spiders, and centipedes. You and your assistant plot out five different areas on the island and count the numbers of flies, spiders, and centipedes living in each plot. Your results show the following: Plot Flies Spiders Centipedes1300254242617103147152147397805791393The most plausible explanation for the high number of spiders in plot 4 is:
A. the flies and spiders worked together to eliminate the centipedes. B. there are too many flies overall. C. the spiders preyed on the centipedes and ignored the flies. D. there are no centipedes to prey on the spiders and there are abundant flies upon which to feed.
Which of the following weather conditions would you expect to have the greatest negative impact on the sexual reproduction of ferns and mosses?
A) Above-average temperatures for several days B) The shade of a forest C) Moderate temperatures and rainfall D) Excessively wet and rainy E) Excessively dry for several days
In the Fite method, the organisms stain:
a) red b) blue c) green d) black