The major damage caused by Neisseria meningitidis is a result of
A) its invasion into the central nervous system.
B) its presence in the respiratory tract of 40% of healthy individuals.
C) its ability to be transmitted by droplets among people who live in close contact.
D) the release of lipid A into the tissues, triggering severe inflammation and DIC.
E) the fact that it can survive in cells after phagocytosis.
D
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A hypertonic environment would be ideal for a healthy plant
Indicate whether the statement is true or false.
Which of the following is true in the pine life cycle?
a. Gametophytes originate within and are dependent upon sporophytes. b. Sporophytes originate within and are dependent upon gametophytes. c. Both gametophytes and sporophytes are totally independent from each other and are equally dominant. d. Gametophytes are free-living and photosynthetic, but are replaced by a dominant sporophyte generation. e. Gametophytes are photosynthetic and partially independent from the sporophytes.
cDNA
a. does not contain introns. b. is produced from mRNA. c. production utilizes reverse transcriptase. d. begins as a hybrid molecule with an mRNA. e. fits all of these descriptions.
The diarrhea associated with enteropathogenic Escherichia coli (EPEC) is the result of Plasmid-mediated A/E histopathology with disruption of normal microvillus structure resulting in malabsorption and diarrhoea
a. true b. false