Which region displays an example of the founder effect amongst its population?

a. China
b. Iceland
c. Central Africa
d. the United States
e. the United Kingdom


b

Biology & Microbiology

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Ramalina lichens are damaged by nitrates

a. True b. False

Biology & Microbiology

Bacteriophages may multiply by a __________

pathway in which the new viral particles are made quickly and released by lysis. Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Researchers in Alaska were interested in increasing the sockeye salmon (Oncorhynchus nerka) population in three coastal lakes. To accomplish this, the ponds were treated with fertilizers. As a result, zooplankton biomass increased between 40% and 700% in the three lakes. The substantial growth in zooplankton would suggest that prior to these experiments, these lakes were ________.

A. subject to low light levels B. stratified C. oligotrophic D. eutrophic

Biology & Microbiology

Which of the following is NOT an advantage of live attenuated vaccine agents?

A) They elicit lifelong immunity. B) They stimulate by cell-mediated and humoral immune responses. C) They occasionally revert to virulent forms. D) They require few or no booster immunizations. E) The immune response generated by the vaccine closely mimics a real infection.

Biology & Microbiology