TLS Online TPP Program

#Question id: 12200


Given some observation of the auxin signalling pathway, which one of the following are the incorrect prediction about signalling?

#Unit 6. System Physiology – Plant
  1. auxin receptor gene family, TIR1/AFB1-5, encode F-box components of the SCF complex that functions in the degradation of AUXIN/INDOLE-3-ACETIC ACID (AUX/IAA) 
  2. Auxin-responsive genes typically have auxin response element (AuxRE) binding sites located in their promoter regions
  3. Auxin response factors (ARFs) are transcription factors that bind to these AuxRE motifs only stimulate transcription
  4. Auxin response factors (ARFs) are transcription factors that bind to these AuxRE motifs to stimulate or repress transcription
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TLS Online TPP Program

#Question id: 11535

#Unit 6. System Physiology – Plant

During IPA pathway in the biosynthesis of auxin using  following enzymes except_____

TLS Online TPP Program

#Question id: 11536

#Unit 6. System Physiology – Plant

IAA has been found to be conjugated to both high- and low-molecular-weight compounds such as,

a) Low-molecular-weight conjugated auxins include esters of IAA with glucose or myo-inositol and amide conjugates such as IAA-N-aspartate

b) High-molecular-weight IAA conjugates include IAAglucan and IAA-glycoproteins found in cereal seeds

c) High-molecular-weight conjugated auxins include esters of IAA with glucose or myo-inositol and amide conjugates such as IAA-N-aspartate

d) Low-molecular-weight IAA conjugates include IAAglucan and IAA-glycoproteins found in cereal seeds

Which of the following is the correct prediction about low-and high-molecular weight ?

TLS Online TPP Program

#Question id: 11537

#Unit 7. System Physiology – Animal

Testosterone is an example of a chemical signal that affects the very cells that synthesize it, the neighboring cells in the testis, along with distant cells outside the gonads. Thus, testosterone is an example of ________.

 I) an autocrine signal

 II) a paracrine signal

 III) an endocrine signal

TLS Online TPP Program

#Question id: 11538

#Unit 7. System Physiology – Animal

Prostaglandins are local regulators whose chemical structure is derived from ________.

TLS Online TPP Program

#Question id: 11539

#Unit 7. System Physiology – Animal

Aspirin and ibuprofen both ________.

TLS Online TPP Program

#Question id: 11540

#Unit 7. System Physiology – Animal

A cell with membrane-bound proteins that selectively bind a specific hormone is called that hormone's ________.