Edward Jenner injected individuals with ____ lesions to protect them from ____
a. chickenpox; smallpox
b. smallpox; chickenpox
c. smallpox; cowpox
d. cowpox; smallpox
e. cowpox; chickenpox
D
Biology & Microbiology
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The organism causing giardiasis is a
A) gram-negative spirochete. B) flagellated protozoan. C) retrovirus. D) type of yeast.
Biology & Microbiology
Euglenids have functional eyespots that can discern all colors of visible light and the movement of predators
Indicate whether the statement is true or false
Biology & Microbiology
The site of exchange of materials between the blood and the body tissues is the ______.
a) arterioles b) veins c) arteries d) capillaries e) venules
Biology & Microbiology
Bioremediation is the use of microbes
a) to clean up pollutants and toxic wastes. b) in recycling vital elements. c) to treat sewage. d) in food production.
Biology & Microbiology