How does the life cycle for the Trypanosoma that causes sleeping sickness differ from the one that causes Chagas' disease?
What will be an ideal response?
Sleeping sickness is caused by T. brucei, and Chagas' disease is caused by T. cruzi, which differ from each other in many ways. First, T. cruzi matures in the hindgut of the kissing bug, whereas T. brucei matures in the salivary gland of the tsetse fly. T. brucei is injected directly through the vector's bite, while T. cruzi enters the host when the vector's feces are rubbed into a bite wound. T. cruzi has an intracellular stage, whereas T. brucei does not. T. brucei remains in fluid compartments of the body (blood and cerebrospinal fluid), whereas T. cruzi penetrates tissues throughout the body, especially the cardiovascular system.
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Classify the following as domains, kingdoms, or neither.
What do you know about different divisions of biology?How does it relate to the question?
What will be an ideal response?
Which one of the following statements is TRUE regarding rural poverty?
A) Less than 25% of the world's population lives in rural poverty. B) The problems of land use in rural areas are similar to those in cities. C) Those in impoverished rural communities will often cut down all trees for fuel and shelter. D) The use of communal lands in impoverished rural areas is carefully monitored. E) Few individuals living in rural areas depend on the local environment for sustenance.
T or F: the physiologic cross section of a fusiform muscle is the same as the anatomical cross section
What will be an ideal response?