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TLS Online TPP Program

#Question id: 14902

Transpirational water flow in the xylem requires a mechanically strong wall that resists from,

#Unit 6. System Physiology – Plant
  1. collapse in response to the negative pressure in the xylem
  2. the forces generated by turgor pressure
  3. bridge to the plasma membrane
  4. collapse in response to the positive pressure in the xylem
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TLS Online TPP Program

#Question id: 2670

#Unit 2. Cellular Organization

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

#Question id: 2671

#Unit 2. Cellular Organization

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

#Question id: 2672

#Unit 2. Cellular Organization

What is the name of the stretch of DNA where RNA polymerase binds?
TLS Online TPP Program

#Question id: 2673

#Unit 2. Cellular Organization

For a repressible operon to be transcribed, which of the following must be true?
TLS Online TPP Program

#Question id: 2674

#Unit 2. Cellular Organization

Most gene regulation happens at which step along the way?
TLS Online TPP Program

#Question id: 2675

#Unit 2. Cellular Organization

Which of the following statements regarding the trp operon is true?