How are sound vibrations amplified in a vertebrate ear?
A. by movements of the basilar membrane
induced by fluid vibrations
B. by movement of the bones of the middle
ear
C. by differences in the surface area of the
eardrum versus the oval window
D. by movements of the basilar membrane
induced by fluid vibrations AND by movement
of the bones of the middle ear
D
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Carrier-mediated transport is also called
A. facilitated diffusion. B. active transport. C. exocytosis. D. endocytosis. E. phagocytosis.
Phylogeny is the apparent
(a) name of an organism. (b) ancestry of an organism. (c) nomenclature. (d) dichotomy of a system of classification.
Gene testing allows the parents to learn more about their child in the prenatal period. However, there are genetic disorders, such as Huntington's disease, that show no phenotypic signs until age 35
This disease is caused by a dominant allele, resulting in degeneration of the brain, muscle spasms, and death within a decade or two. Because it is caused by a dominant allele, 50% of the offspring will carry the disease. If you knew that someone in your family had Huntington's disease, would you get tested early on, before you start a family and have your own children? Would you rather not know your fate, even if it means that you may pass the dominant allele of this disease to your offspring? (Note: Before being tested, a person usually undergoes a battery of psychological tests to make sure that he or she is emotionally stable enough to deal with knowing that he or she will develop the disease and that there is no cure.)
Mate guarding is a reproductive tactic that functions to:
a. reduce paternity uncertainty. b. increase the female's investment in the offspring. c. reduce the male's reproductive investment. d. reduce the female's fitness. e. increase the number of mates to which a male has access.