Following exposure to sulfur mustard:
A) the patient experiences immediate intense pain, indicating rapid damage to the underlying cells and tissues.
B) the patient experiences a progressive reddening of the affected area, which will gradually develop into large blisters.
C) signs and symptoms typically appear within 1 to 2 minutes, reflecting rapid entry of the chemical into the bloodstream.
D) the patient often develops a grayish discoloration at the contaminated site, even though secondary cellular injury does not occur.
Answer: B) the patient experiences a progressive reddening of the affected area, which will gradually develop into large blisters.
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The very first genome sequenced was from:
A. a eukaryotic organism. B. a bacterium. C. an archaeal cell. D. yeast. E. a virus.
____ are produced by B cells and possess antibodies attached to their cell surfaces. The cells play a pivotal role in the secondary immune response
Fill in the blank with the appropriate word.
Pyramids of numbers are of limited usefulness because they:a
do not indicate the biomass of the organisms at a given time. b. do not indicate the gross primary productivity of each species. c. do not include energy flow through the ecosystem. d. include three trophic levels. e. have limited reliability of the actual numbers involved.
These are nonmotile parasites with special organelles for penetrating host tissue.
a. Apicomplexa b. ciliates c. dinoflagellates d. Microsporidia