. In 2015, malaria caused over 400,000 deaths, mostly in African children. It remains a global health threat. Which protist is responsible for malaria?
a. Anophele gambiae
b. Trypanosoma brucei
c. Plasmodium falciparum
d. Phytophthora infestans
c. Plasmodium falciparum
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These white blood cells are concentrated in the
lining of respiratory passages, are important phagocytes that protect the lungs, and present antigens to T cells. These white blood cells are
a. B lymphocytes. b. macrophages. c. neutrophils. d. dendritic cells. e. mast cells
The letter “D” in the above figure represents the
a. style. b. ovary. c. stigma. d. anther. e. filament.
Sewage sludge, the solid that remains after aerobic decomposition, makes a useful fertilizer because
A. it contains significant energy in the form of methane. B. it has been treated to remove microbes and will not be a source of pathogens. C. it is rich in nitrogen, phosphorus, and potassium. D. it is rich in carbon and nitrogen.
Thread-like pseudopods that can perform phagocytosis are generally characteristic of which group?
A) cercozoans B) gymnamoebas C) entamoebas D) amoeboid stage of cellular slime molds E) oomycetes