All of the following pertain to patients with AIDS, except
A) That have CD4 T-cell counts below 200 cells/mm3 of blood.
B) The highest number of cases worldwide is in the United States.
C) They get repeated, life-threatening opportunistic infections.
D) They can get unusual cancers and neurological disorders.
E) They have a profound immunodeficiency.
B) The highest number of cases worldwide is in the United States.
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If electrons are gained or lost in the formation of a bond, the bond is termed
A. covalent. B. hydrogen. C. ionic. D. nonpolar.
Four of the five plants listed below have
flagellated sperm. Select the EXCEPTION.
a. mosses b. horsetails c. ginkgos d. conifers e. ferns
A major ecological role for fungi is as
A. producers. B. decomposers. C. nitrogen-fixing organisms. D. vectors of disease.
The discovery of ________ explains embryonic pattern formation in a wide variety of organisms
A) the three-dimensional forms of animals B) gastrulation C) homeotic genes D) programmed cell death