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TLS Online TPP Program

#Question id: 35155

Which of the following statements about cell fate determination in plants are correct?

#XL - R Botany
  1. Cell fate is determined primarily by lineage in plants
  2. Positional cues from surrounding cells influence cell fate
  3. Cell fate determination can be reversible in early development
  4. Transcription factors often act downstream of positional signals
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TLS Online TPP Program

#Question id: 2667

#XL - T Zoology

A regulatory protein that attracts RNA polymerase to its promoter is an example of what type of regulation?
TLS Online TPP Program

#Question id: 2668

#XL - T Zoology

The toxic shock syndrome toxin is produced by some Salmonella species when there is not sufficient iron present. When iron is present, it prevents transcription of the TSS-toxin gene. Iron therefore serves as __________.
TLS Online TPP Program

#Question id: 2669

#XL - T Zoology

what is an operon?
TLS Online TPP Program

#Question id: 2670

#XL - T Zoology

A protein that binds to the operator and blocks the RNA polymerase
TLS Online TPP Program

#Question id: 2671

#XL - T Zoology

The "on/off" switch for an operon is called the
TLS Online TPP Program

#Question id: 2672

#XL - T Zoology

What is the name of the stretch of DNA where RNA polymerase binds?