The amyloid plaques associated with Alzheimer's disease:a
are associated with neurons lacking microglia.
b. are formed from the shortest known form of beta-amyloid molecules.
c. have been linked to mutations in genes that produced abnormal beta-amyloid.
d. result in disruption of sodium regulation.
e. are responsible for 90% of the diagnosed cases of this disease.
C
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Which of the following is not an anatomical change that would be associated with a transition from four to two legs?
A. S-shaped spine B. repositioned foramen magnum C. narrower human foot D. wider stance E. None of the answer options are correct.
Which molecules are associated with the cell wall of Gram-positive bacteria?
A. Peptidoglycan B. D-form amino acids C. Teichoic acids D. LPS E. Peptidoglycan, D-form amino acids, AND teichoic acids
Which of the following statements about emerging viruses is false?
A. Emerging viruses are able to "jump" from one species to another. B. Hantavirus, which causes a hemorrhagic-type fever, originates in deer mice. C. Ebola is an emerging virus of unknown origins that can have a mortality rate in excess of 50%. D. The emerging virus SARS is a coronavirus. E. The stable genome of the SARS virus makes it an unlikely candidate for vaccine development.
Lactose intolerance is caused by a(n) ____
a. nucleotide substitution that prevents lactose production b. variant manifestation of galactosemia c. accumulation of galactose-1-phosphate d. inability to digest lactose e. excess in lactose production