Identification of the index case of an outbreak, allows steps to be taken to break the chain of infection, such as administering antibiotics to potentially infected persons.
A) True
B) False
A) True
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What is a trace fossil?
A. a small fossil B. fossil evidence of organisms other than conventional fossils of hard body parts C. a fossil which is part of a series of fossils that trace the evolution of a group of species D. a fossil that allows scientists to trace the movement of the fossilized organism
The most important concept in the field of population genetics is
A. natural selection. B. population size. C. rates of mutation. D. genetic variation. E. phenotypic variation.
Juxtacrine communication uses the circulatory system.
a. true b. false
Which hypothesis suggests that organic molecules formed near Earth's surface in pools of water?
a. clay hypothesis b. iron-clay hypothesis c. organic broth hypothesis d. prebiotic soup hypothesis e. iron-sulfur world hypothesis