All of the following are true statements about events that occur in the apicomplexan life cycle EXCEPT ________.
A. the life cycles include both sexual and asexual stages
B. often two completely different organisms host different stages of the life cycle
C. the sporozoite is the motile infective stage
D. the haploid and diploid generations alternate
E. There is no exception here. All of these statements are true.
Answer: E
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The ability of atoms to attract electrons is referred to as:
A. van der Waals attraction. B. potential energy. C. hydrophobicity. D. cohesion. E. electronegativity.
The inner cell mass
A) helps form the amnion. B) becomes the fetus. C) gives rise to the embryo. D) is derived from the male genome only.
TNF is ____ for neutrophils
Fill in the blank(s) with the appropriate word(s).
At the end of the Permian period a large mass extinction occurred; 90-95% of the marine and terrestrial species were eliminated. What is thought to be the possible cause of this mass extinction?
A. Competition between marine and terrestrial species B. Volcanic eruptions C. Meteorite collisions with Earth D. Glaciation E. Sudden drop in atmospheric O2