TLS Online TPP Program

#Question id: 29080


Invasive species are less impacted by enemies than native species. An explanation for the better growth and propagation of invasive species in comparison to their native counterparts is provided by which one of the following hypotheses?

#Unit 10. Ecological Principles
  1. Ecological niche hypothesis
  2. Intermediate disturbance hypothesis
  3. Enemy release hypothesis
  4. Biotic resistance hypothesis
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TLS Online TPP Program

#Question id: 4342

#Unit 3. Fundamental Processes

Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome. If a researcher moves the operator to the far end of the operon, past the transacetylase (lacA) gene, which of the following processes would likely occur when the cell is exposed to lactose?

TLS Online TPP Program

#Question id: 4343

#Unit 3. Fundamental Processes

Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome. If a researcher moves the repressor gene (lacI), along with its promoter, to a position at some several thousand base pairs away from its normal position, which of the following results would be expected?

TLS Online TPP Program

#Question id: 4344

#Unit 3. Fundamental Processes

How does the transcription of structural genes in an inducible operon occur?

TLS Online TPP Program

#Question id: 4345

#Unit 3. Fundamental Processes

For a repressible operon to be transcribed, which of the following conditions must occur?

TLS Online TPP Program

#Question id: 4346

#Unit 3. Fundamental Processes

Which of the following results would occur if the repressor of an inducible operon were mutated so that it could not bind the operator?

TLS Online TPP Program

#Question id: 4347

#Unit 3. Fundamental Processes

According to the lac operon model proposed by Jacob and Monod, what is predicted to occur if the operator is removed from the operon?