Which of the following is NOT a characteristic inherent of the non-endospore-forming gram-positive rods?
A) are aerotolerant
B) carry out fermentative metabolism
C) display a branched filamentous morphology
D) nonpathogenic
E) lack cell walls
D
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Recent advances in molecular techniques allowed paleobiologists to sequence DNA that was preserved in a woolly
mammoth that died ____ years ago.
a. 27,000 b. 4,000 c. 2,700 d. 1,000 e. 500
Traveling to a high altitude can result in “altitude sickness.” However, the body eventually adjusts
through which mechanism?
a. Increased hemoglobin production. b. Increased erythrocyte production. c. Increased secretion of erythropoietin. d. Increased hemoglobin production and increased erythrocyte production. e. Increased hemoglobin production as a result of increased secretion of erythropoietin.
Valley fever, a medical condition caused by Coccidioides immitis, is caused by
A. common allergic reactions that many people have to the fungus. B. entry of the fungal spores by inhalation. C. toxins produced by the fungus. D. a mutation of the common fungal inhabitant of human hair, nails, and skin. E. eating the fruiting body, rather than the mycelium of the fungus.
Yersinia pestis
A. has deer as an endemic reservoir. B. is usually transmitted by a flea vector. C. does not respond to antimicrobial drugs. D. was virulent historically but currently circulating strains are not virulent.