Multiple sclerosis
a. is an autoimmune disorder.
b. involves destruction of myelin sheaths of CNS
neurons.
c. destroys oligodendrocytes.
d. results in dizziness, numbness, and muscle
weakness.
e. includes all of these descriptions.
Answer: e
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How do altruistic behaviors arise through natural selection?
A) By his/her actions, the altruist increases the likelihood that some of its genes will be passed on to the next generation. B) The altruist is appreciated by other members of the population because its survivability has been enhanced by virtue of its risky behavior. C) Animals that perform altruistic acts are allowed by their population to breed more, thereby passing on their behavior genes to future generations. D) Altruistic behaviors lower stress in populations, which increases the survivability of all the members of the population.
In animals that take in oxygen from their environment, glucose is broken down into carbon dioxide and water in a process called
A. anaerobic respiration. B. organic compound respiration. C. glucose respiration. D. aerobic respiration.
The determination of the taxon to which an organism belongs is called ________.
A. classification B. systematics C. taxonomy D. identification
What functions can complement proteins perform? (Check all that apply.)
_____ amplify the inflammatory response _____ attract phagocytes to the site of infection _____ bind Fc receptors _____ coat invading microbes _____ insert themselves into the foreign cell's plasma membrane _____ provide immunity in response to immunization _____ store "memories" of specific antigens for months or years