TLS Online TPP Program

#Question id: 4358


Which of the following mechanisms is used to coordinate the expression of multiple, related genes in eukaryotic cells?

#SCPH28 | Zoology
  1. Environmental signals enter the cell and bind directly to promoters.

  2. A given gene may have multiple enhancers, but each enhancer is generally associated with only that gene and no other.

  3. The genes are organized into a large operon, allowing them to be coordinately controlled as a single unit.

  4. A single repressor is able to turn off several related genes.

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TLS Online TPP Program

#Question id: 4339

#SCPH05 I Biotechnology

In positive control of several sugar metabolism-related operons, the cAMP receptor protein (CRP) binds to DNA to stimulate transcription. Which of the following environmental conditions causes an increase in CRP activity in stimulating transcription?

TLS Online TPP Program

#Question id: 4339

#SCPH06 I Botany

In positive control of several sugar metabolism-related operons, the cAMP receptor protein (CRP) binds to DNA to stimulate transcription. Which of the following environmental conditions causes an increase in CRP activity in stimulating transcription?

TLS Online TPP Program

#Question id: 4339

#SCPH28 | Zoology

In positive control of several sugar metabolism-related operons, the cAMP receptor protein (CRP) binds to DNA to stimulate transcription. Which of the following environmental conditions causes an increase in CRP activity in stimulating transcription?

TLS Online TPP Program

#Question id: 4340

#SCPH01 Biochemistry

There is a mutation that is found in E. coli in the repressor that results in a molecule known as a super-repressor because it represses the lac operon permanently. Which of the following characteristics would you expect to observe in such a mutant?

TLS Online TPP Program

#Question id: 4340

#SCPH05 I Biotechnology

There is a mutation that is found in E. coli in the repressor that results in a molecule known as a super-repressor because it represses the lac operon permanently. Which of the following characteristics would you expect to observe in such a mutant?

TLS Online TPP Program

#Question id: 4340

#SCPH06 I Botany

There is a mutation that is found in E. coli in the repressor that results in a molecule known as a super-repressor because it represses the lac operon permanently. Which of the following characteristics would you expect to observe in such a mutant?