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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

#Unit 4. Cell Communication and Cell Signaling

  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: 33405

#Unit 1. Molecules and their Interaction Relevant to Biology

Which one of the following defines the psi angle in the  protein backbone?
TLS Online TPP Program

#Question id: 11403

#Unit 10. Ecological Principles

Several categories of risk of species extinction have been defined. A species can be determined as critical endangered if there is considered to be
TLS Online TPP Program

#Question id: 28743

#Unit 2. Cellular Organization

Which of the following enzymes that uses the H2O2 (in peroxisomes) to oxidize a variety of other substrates by the “peroxidation” reaction?
TLS Online TPP Program

#Question id: 19285

#Unit 9. Diversity of Life Forms

What is true of stamens, sepals, petals, carpels, and pinecone scales? 
TLS Online TPP Program

#Question id: 21114

#Unit 12. Applied Biology

Which one of the following measures changes in mass?