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TLS Online TPP Program

#Question id: 1021

Disease Control (CDC) determine that the agent causing the birds to die is the West Nile virus. Outbreaks of this illness have been observed in several other countries in Asia and the Middle East across the last 50 years, but not in the United States. With this information, what would be the best categorization of this infectious agent/disease

#XL - T Zoology

  1. This is clearly a reemerging infection. It's been around for a long time, and it is reappearing in a susceptible population again.

  2. This is clearly a nosocomial infection. It's transmitted from animals to human beings in urban environments.

  3. This is clearly an emerging infection. It hasn't been around that long, and it has made a jump across continents into a new susceptible population.

  4. This is clearly not a concern to human beings--maybe it's emerging in animals, maybe it's reemerging, maybe it's nosomial. But who cares? It's only in birds.

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TLS Online TPP Program

#Question id: 11812

#XL - R Botany

The  nitrogens  at the 3, 7, and 9 positions of the adenine ring of cytokinins can be conjugated to glucose residues, Alanine can also be conjugated to the nitrogen at the 9 positon, forming
TLS Online TPP Program

#Question id: 3008

#XL - S Microbiology

The structures present in the hay infusions used in experiments on spontaneous generation that made them difficult to sterilize are
TLS Online TPP Program

#Question id: 1047

#XL - T Zoology

A virion is a(n)
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#Question id: 3927

#XL - Q Biochemistry

An operon is __
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#Question id: 5562

#XL - T Zoology

In an egg cell treated with a chemical that binds calcium and magnesium ions, the ________.