An infarct of heart tissue might be caused by:
What will be an ideal response?
blood clot in the artery
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There are two cellular domains: the ____________________ and the ____________________. Fill in the blank(s) with the appropriate word(s)
At rest, expiration is a(n) ________ process that involves ________.
A) passive : relaxation of the internal intercostals B) active : contraction of the internal intercostals C) active : the contraction of the diaphragm D) active : relaxation of the diaphragm E) passive : relaxation of the diaphragm and external intercostals
Who first demonstrated transformation using mice and two strains of Streptococcus pneumoniae?
A. Griffith B. Watson and Crick C. Avery, McCarty, and MacLeod D. Hershey and Chase E. Jacob and Monod
Given the following LD50 values for Bacillus anthracis, through which portal of entry is it easiest to get anthrax?
A) ingestion: 1 million endospores B) All are equally easy portals of entry. C) cutaneous: 50 endospores D) inhalation: 20,000 endospores