The patient is suffocating because of the accumulation of dead tissue and fibrin in her throat. What is the etiology of the symptoms?
A) Corynebacterium
B) Haemophilus
C) Bordetella
D) Mycobacterium
E) The answer cannot be determined based on the information provided.
A
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A graduate student is studying the distribution of auxin in roots and stems exposed to sunlight
He notices that more auxin collects in the sides of stems and roots that are not exposed to light; however, the effects of this distribution are very different. Why? Select all correct choices. A. Auxin prevents cell elongation in the shaded cells of stems. B. Auxin (via ethylene) promotes cell elongation in the shaded cells of roots. C. Auxin (via ethylene) prevents cell elongation in the shaded cells of roots. D. Auxin promotes cell elongation in the shaded cells of stems.
Hantavirus has all of the following characteristics except
A. the first U.S. outbreak occurred in 1993 in the southwest. B. it is transmitted by aerosol transmission from rodent excreta. C. it is a zoonosis. D. symptoms are abrupt fever, lung edema, respiratory distress, and hypotension. E. the reservoir is human carriers.
____ are the major producers in the ocean food chain.
A. Benthic organisms B. Phytoplankton C. Fungi D. Water molds
When Mendel crossed short (tt) pea plants with short (tt) pea plants the offspring
a) were all tall. b) were a mix of tall and short. c) were nonexistent. d) None of the answers are correct. e) were all short.