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TLS Online TPP Program

#Question id: 12967

Which of the following is the best explanation for why net primary productivity in terrestrial ecosystems tends to increase toward the tropics?

#Unit 10. Ecological Principles
  1. The higher species diversity in the tropics tends to increase plant growth. 
  2. There are lower metabolic costs to plant growth in the tropics.
  3. The availability of water and warm temperatures in the tropics fosters photosynthesis.
  4. The tropics have more predators that minimize herbivory.
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TLS Online TPP Program

#Question id: 24508

#Unit 10. Ecological Principles

Parasitoids themselves serve as hosts for other parasitoids, which are known as
TLS Online TPP Program

#Question id: 4002

#Unit 3. Fundamental Processes

Which statement is false about operons that have the feature of catabolic repression?
TLS Online TPP Program

#Question id: 29489

#Unit 6. System Physiology – Plant

The ribotide and riboside forms of trans-zeatin can be interconverted, and free transzeatin can be formed from the ribotide by the
TLS Online TPP Program

#Question id: 4025

#Unit 3. Fundamental Processes

You have identified a transcription factor and hypothesize that it binds to the promoter region of a gene that encodes a protein that causes cells to stop dividing. In order to test the interaction between the transcription factor and the DNA you will need to do a specific assay. Which one of the following would you use to test your hypothesis?
TLS Online TPP Program

#Question id: 2186

#Unit 2. Cellular Organization

Of the four classes of cellular macromolecules, which one is not a component of cell membranes?