A pathogen is an organism that causes disease.
a. true
b. false
Answer: a. true
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A national planner is aware that the income tax revenues will fall in 30 years, so it would be best to increase the money coming into the budget at that time. Which of the following would be the most productive option?
A) Sponsor more research into late-onset Alzheimer's disease research. B) Promote men's health programs. C) Increase childhood vaccination programs. D) Build better highways.
An organism in which foreign genes have been incorporated is called a:
a. recombinant organism. b. transgene. c. polymorphism d. transgenic organism. e. recombinant
The observation that most aquatic animals, like fish, penguins, and whales, all have streamlined bodies and fins or flippers for steering are a result of
A. sexual selection. B. artificial selection. C. analogous selection. D. vestigial selection. E. convergent evolution.
Virus morphology does not include which of the following characteristics?
A. Presence or absence of an envelope B. Size C. Shape D. Host range