The transmission cycle of Fasciola hepatica differs from the cycles of Opisthorchis sinensis and Clonorchis sinensis in that
A. encystment occurs on a freshwater plant.
B. freshwater snails release cercariae.
C. eggs are released from an infected human via the urine.
D. helminth development occurs in the liver.
Answer: A
You might also like to view...
Species of the genus Hyphomicrobium are budding bacteria that attach to solid objects and are ________.
A. able to reproduce by budding B. found in marine and freshwater environments C. aerobic chemoheterotrophs D. All of the choices are correct.
Boiling is not reliable for sterilization because
A. heat-sensitive instruments may be destroyed. B. heat-resistant endospores are unaffected. C. water boils at a higher temperature at lower altitudes. D. viruses are more sensitive to heat than bacteria.
The black-bellied seedcrackers of Cameroon
a. have bills either 12 or 15 mm wide. b. use both hard and soft seeds during the wet season c. sustain intense competition for scarce seeds during times of drought. d. provide an example of disruptive selection. e. fit all of these descriptions.
The health of the patient
A) is secondary to the health of the healthcare worker. B) is secondary to the health of co-workers in healthcare settings. C) should be the primary concern of the healthcare worker.