Which of these diseases involves the destruction of the myelin sheath on certain neurons within the brain and spinal cord?
A) Alzheimer's disease B) Parkinson's disease
C) depression D) multiple sclerosis
Answer: D
Biology & Microbiology
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Four of the following are modern apes. Which is not a modern ape?
a. gibbon b. new world monkey c. chimpanzee d. gorilla e. orangutan
Biology & Microbiology
Some protobionts have been shown to have the ALL of following features except
a. divide by binary fission. b. maintain a chemical environment different from their external environment. c. metabolize certain compounds. d. grow in size. e. disorganization
Biology & Microbiology
A method of ranking individuals from highest to lowest is
A. imprinting. B. territorial behavior. C. dominance hierarchy. D. ethology.
Biology & Microbiology
Which of the following organisms lack a hydrostatic skeleton?
A. planarian B. roundworms C. hydra D. earthworms E. cicada
Biology & Microbiology