TLS Online TPP Program

#Question id: 4360


Which of the following functions are characteristic of general transcription factors in eukaryotes?

#Unit 3. Fundamental Processes
  1. They bind to other proteins or to the TATA box.

  2. They inhibit RNA polymerase binding to the promoter and begin transcribing.

  3. They usually lead to a high level of transcription even without additional specific transcription factors.

  4. They bind to sequences just after the start site of transcription.

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TLS Online TPP Program

#Question id: 4341

#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 promoter for the lac operon to the region between the beta galactosidase (lacZ) gene and the permease (lacY) gene, which of the following results would be most likely?

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?