Four of the following features are important evolutionary advancements in the evolution of the tree-dwelling primates
Which one is the exception?
a. grasping hands and feet
b. depth perception
c. well-developed sense of smell
d. the ability to see in 3D
e. a large brain relative to body size
ANSWER: c
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Which of the following tends to be more complex in a parasitic helminth than in free-living helminths?
A) digestive system B) nervous system C) reproductive system D) digestive and nervous systems E) digestive, reproductive, and nervous systems
During the reabsorption process, ____ of the water in the tubules is returned to the blood
a. 10% b. 25% c. 50% d. 99% e. 100%
Which description of antigenic drift and antigenic shift in the influenza virus is incorrectly matched?
A) Antigenic shift: May result in a pandemic outbreak due to widespread lack of immunity. B) Antigenic drift: A host vaccinated against an influenza strain before antigenic drift may lack effective immunity and be susceptible to infection. C) Antigenic drift: Spontaneous mutation leads to a minor change in HA or NA spikes. D) Antigenic shift: Often leads to viral strains with new features such as increased infectivity or expanded host range. E) Antigenic drift: Often involves reassortment of viral strains in an animal host followed by a "species jump" to humans.
Where is the organ of Corti located?
A. in the cochlear duct B. in the upper canal of the cochlea C. in the lower canal of the cochlea D. in the semicircular canals