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TLS Online TPP Program

#Question id: 10420

 A toggle model has been proposed for phytochrome interconversion, according to this model which option is correct?

#Unit 6. System Physiology – Plant
  1. D-ring of the chromophore in the Pr form exist in the β-hairpin form changes conformation to an α-helix by inducing red-light
  2. the structure of the α helix region of Pr is changed to an β-hairpin during the conversion of Pr to Pfr
  3. C-ring of the chromophore in the Pfr form exist in the β-hairpin form changes conformation to an α-helix by inducing red-light and conversion of pr to pfr takes place
  4. By absorbing red light conversion of Pr to Pfr, β1-region of the chromophore changes conformation to an α-helix
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TLS Online TPP Program

#Question id: 12513

#Unit 7. System Physiology – Animal

A 26-year-old construction worker is brought to the emergency room with a change in mental status after working a 10-hour shift on a hot summer day (average outside temperature was 97°F). The man had been sweating profusely during the day but did not drink fluids. He has a fever of 102°F, heart rate of 140 beats/min, and blood pressure of 100/55 mm Hg in the supine position. On examination, he has no perspiration, appears to have dry mucous membranes, and is poorly oriented to person, place, and time. Assuming that his kidneys were normal yesterday, which of the following sets of hormone levels describes his condition, compared with normal?
TLS Online TPP Program

#Question id: 12514

#Unit 7. System Physiology – Animal

Acute metabolic acidosis tends to _____ in intracellular K+ concentration and _____ in K+ secretion by the cortical collecting tubules.
TLS Online TPP Program

#Question id: 12515

#Unit 6. System Physiology – Plant

The most widely used techniques allows detection of as little as 10^13 g ABA by
TLS Online TPP Program

#Question id: 12516

#Unit 6. System Physiology – Plant

ABA Is Synthesized from a Carotenoid Intermediate is takes place in___
TLS Online TPP Program

#Question id: 12517

#Unit 6. System Physiology – Plant

Synthesis of violaxanthin is catalyzed by an enzyme known as__
TLS Online TPP Program

#Question id: 12518

#Unit 6. System Physiology – Plant

ABA inactivation by oxidation and by the conjugation process such as
a) ABA inactivation by oxidation with monosaccharides ABA-β-D-glucose ester
b) ABA inactivation by conjugation with monosaccharides ABA-β-D-glucose ester
c) ABA inactivation by oxidation into Phaseic acid
d) ABA inactivation by conjugation  by oxidation into Phaseic acid
Which of the following combination from the given above statements about conjugation and oxidation process