Trace the path of a sound wave beginning from its entry into the ear to its transmission to the brain. What will be an ideal response?
Concepts to Consider: Sound waves pass through the external auditory canal; tympanic membrane
vibrates; malleus, incus, stapes amplify vibrations; oval window vibrates; fluids are set in motion;
basilar membrane vibrates; hair cells move against the tectorial membrane; impulses sent by the
cochlear nerve to the brain
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The persistence of malaria and sickle-cell anemia within a population best illustrates _____
a. bottlenecking b. balanced polymorphism only c. natural selection only d. artificial selection only e. balanced polymorphism and natural selection
Proteasomes direct the destruction of defective DNA
__________________Indicate whether the statement is true or false.
Marsupial animals complete development in
A. a placenta. B. water. C. an egg. D. a pouch.
When using the scientific method, scientists make several fundamental assumptions. Which of these does not make sense, based on your knowledge of the scientific method?
A. There are specific causes for events observed in the natural world. B. The causes for events can be identified. C. There are general rules or patterns that can be used to describe what happens in nature. D. An event that occurs repeatedly probably has different causes.