Binary fission is the method by which bacteria
A) move to new locations.
B) acquire genetic variation.
C) reproduce.
D) metabolize without oxygen.
E) survive extreme conditions for long periods of time.
C
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What are some of the ways that viruses can bypass an animal's immune system? Select all correct choices
A. antigenic disappearance B. antigenic variation C. antigenic shift D. antigenic drift
Within the country of Indonesia, the island of Sumatra has tigers and rhinos, while to the East, the island of Sulawesi has cockatoos and tree kangaroos. What is the best explanation for this observation?
A. The climates on the two islands are very different, allowing some species to survive, and others not. B. Animals in Sumatra came from Asia, while those in Sulawesi came from Australia. C. Animals in Sumatra and Sulawesi both came from Asia, but those in Sulawesi migrated farther. D. Some species can migrate between islands and others cannot. E. Sumatra separated from Sulawesi millions of years ago, and the Sumatran animals have since become dissimilar to their ancestors in Australia.
In yeast, if you want to prevent the Gal4 regulatory protein from binding near each of the GAL genes, which sequence element would you target?
A) core promoter B) proximal elements C) enhancer sequence D) homeodomain motif E) upstream activator sequence
All of the following are dependent on cilia EXCEPT the
A) gills of oysters. B) respiratory tract of vertebrates. C) oviduct in mammals. D) sperm of animals.