TLS Online TPP Program

#Question id: 4210


Which statement is true about the attenuation mechanism of regulation?

#Unit 3. Fundamental Processes
  1. Eukaryotes lack this mechanism because transcription and translation occur in different parts of the cell.

  2. Attenuation is the modern term for repression in prokaryotes.

  3. It is a form of regulation at the level of transcription, thereby preventing any translation.

  4. Attenuation is the most common type of regulation found in plants.

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TLS Online TPP Program

#Question id: 10491

#Unit 6. System Physiology – Plant

Acidification of the lumen stimulates zeaxanthin formation, and alkalinization favors violaxanthin formation. Lumen pH depends on photosynthetic photon flux density, most effective at

TLS Online TPP Program

#Question id: 10492

#Unit 6. System Physiology – Plant

Three major distinct metabolic pathways that can supply osmotically active solutes to guard cells have been clearly characterized,

TLS Online TPP Program

#Question id: 10493

#Unit 6. System Physiology – Plant

Which wavelength modulates guard cell osmoregulation by means of its activation of proton pumping, solute uptake, and stimulation of the synthesis of organic solutes;

TLS Online TPP Program

#Question id: 10494

#Unit 6. System Physiology – Plant

Sucrose is an osmotically active solute in guard cells, One implication of these osmoregulatory features is that stomatal opening & closing is associated with which of the following given statements?

TLS Online TPP Program

#Question id: 10495

#Unit 6. System Physiology – Plant

Guard cells have different mechanisms mediating responses to blue light. The npq1 mutant has a lesion in the enzyme that covert violaxanthin to zeaxanthin. What will causes if the npq1 mutant?

TLS Online TPP Program

#Question id: 10496

#Unit 6. System Physiology – Plant

Blue light–stimulated stomatal opening is abolished by green light in the 500 to 600 nm region of the spectrum,what are these alphabet showing in the graph?