The term virulence refers to __________.
A. a disease caused by a viral pathogen
B. a disease likely to be fatal to its host
C. an organism that causes disease in humans
D. the ease with which a pathogenic organism can overcome host defenses
Question 2
Which of the following statements regarding cryptosporidiosis is INCORRECT?
A. Infection may be acquired from drinking water contaminated with parasite cysts.
B. Parasites are present in the intestinal tracts of cattle and many farm animals, and infectious cysts are excreted in their feces.
C. Parasite cysts are quite fragile and do not normally survive outside of the intestinal tract of infected persons.
D. Infection may be acquired from swimming in a swimming pool in which the pool water has been contaminated by parasite cysts from the perianal skin of infected persons with diarrhea who have also been swimming in the pool.
E. Infection causes an acute self-limited diarrhea in immunocompetent persons, but may cause chronic life-threatening diarrhea in immunocompromised persons.
Mutations caused by air pollution.
Variegated leaves caused by a mutation in cpDNA
Different parts of the body mature at different rates. “General” refers to the body as a whole: the
Abnormalities Caused by Cardiac Pathology
The term “natural,” when used on the packaging of meat and poultry
In the reaction C(s) + O2(g) CO2(g) carbon is __________.