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TLS Online TPP Program

#Question id: 12798

Which of the following statements best describes the interaction between fire and ecosystems? 

#Unit 10. Ecological Principles
  1. The chance of fire in a given ecosystem is highly predictable over the short term.
  2. Many kinds of plants and plant communities have adapted to frequent fires.
  3. The prevention of forest fires has allowed more productive and stable plant communities to develop. 
  4. Chaparral communities have evolved to the extent that they rarely burn.
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TLS Online TPP Program

#Question id: 24235

#Unit 4. Cell Communication and Cell Signaling

In cultured cells, which of the following mutation in the EC5 domain of CDHR3 increases the cell-surface expression of CDHR3 and the binding and replication of RV-C?
TLS Online TPP Program

#Question id: 2992

#Unit 2. Cellular Organization

DNA was isolated from three different cell types of the same organism, the relative DNA content for each type was determined, and the results were plotted on the graph shown in the figure below. Refer to the graph to answer the following questions. Which sample of DNA might be from a cell that stopped the process of cell division in G0 phase of the cell cycle prior to meiosis?
TLS Online TPP Program

#Question id: 26834

#Unit 10. Ecological Principles

A zone of junction or a transition area between two biomes called
TLS Online TPP Program

#Question id: 28273

#Unit 5. Developmental Biology

In sea urchins, the acrosome reaction is initiated by_____
TLS Online TPP Program

#Question id: 15268

#Unit 13. Methods in Biology

During DNA isolation, phenol / chloroform extraction is performed to remove