Whenever the body is re-exposed to an allergen, the binding of IgE antibodies causes:
a. degranulation and inflammation
b. the release of antihistamines
c. the suppression of the inflammatory response
d. the production of clonal cells
e. fever
a
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Which of the following is true of plant cells?
A) Plant cells may contain chloroplasts. B) Plant cells are always much larger than animal cells. C) Chromosomes are found only in plant cells. D) Only plant cells have a cell membrane. E) The plant cell has no cell wall.
Early in development, female mammalian embryos convert an X chromosome in each cell into an inactivated form. What is this form called?
a. neutral X b. odontoid process c. Barr body d. axial body
In incomplete dominance,
a. one allele is not dominant to another allele. b. the genotype can be determined by the phenotype. c. the heterozygote is somewhat intermediate to the two homozygotes. d. the intermediate phenotype may be the result of enzyme insufficiency. e. all of these are true.
Which primates are included within the suborder Prosimii?
a. tarsiers b. monkeys c. monkeys and apes d. lemurs, galagos, and lorises e. monkeys, apes, and humans