Climate change is increasing the distribution of which of the following diseases?
a) Cytomegalovirus
b) Chikungunya fever
c) Mononucleosis
d) Ebola
Ans: b) Chikungunya fever
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The reservoir for O. anthropi is:
a. environment only, not human flora. b. animal oral and respiratory flora. c. environment, cold climates. d. environment and human flora.
What is a plant tissue?
A. A group of cells that work together to perform a specific function B. A group of organs that work together to perform a specific function C. A group of systems work together to perform a specific function D. There is no such thing as a plant tissue; tissues are only found in animals.
Which hypothesis was tested by Warren and Marshall during their research involving Helicobacter pylori bacteria and stomach ulcers?
A) Eating spicy food increases populations of H. pylori in the stomachs of people susceptible to ulcers. B) The cause of many stomach ulcers is the bacterium H. pylori, not spicy food. C) Stomach acid production is decreased by H. pylori bacteria in the stomachs of people with ulcers. D) Acute stomach pain is often caused by H. pylori bacteria, not ulcers.
The bacteria that cause tooth decay have a capsule. What does this tell you about the relative effectiveness of a toothbrush with stiff bristles and one with soft bristles?
What will be an ideal response?