Given  some  statements  about auxin  signal  transduction  pathway;

a) ARFs bind the AuxRE stably, must form dimers promote transcription by binding to two AuxREs arranged in a palindrome

b) inactive heterodimers may act to inhibit ARF–AuxRE binding, thereby blocking either gene activation or repression

c) Protein encodes the AUX/IAA gene family can inhibit the transcription of early auxin response genes by forming inactive heterodimers with ARFs

d) Auxin induces the transcription of the early response genes by promoting the proteolytic degradation of the inhibitory AUX/IAA proteins so that active ARF dimers can form

e) AUX/IAA turnover to involve ubiquitination by a ubiquitin ligase and proteolysis by the massive 26S proteasome complex

f) A negative feedback loop is introduced into the pathway by virtue of the fact that one of the gene families turned on by auxin is AUX/IAA, which inhibits the response.

Find out the correct sequence from the following above statements;

TLS Online TPP Program

#Question id: 26448

#Unit 3. Fundamental Processes

Choose the correct statement regarding DNA photolyase 

a.MTHF polyglu absorb blue light photon of 300-500 nm

b.And the MTHF polyglu radicalize FADH cofactor

c.And this FADH cofactor donate single electron to CBD 

d.And this FADH cofactor donate many electron to CBD

TLS Online TPP Program

#Question id: 26449

#Unit 3. Fundamental Processes

Ability of core and holoenzyme to transcribe DNAs differs, so choose which of the following is correct

a.With  subunit, the holoenzyme worked equally well on both intact as well as nicked types of DNA

b.With  subunit, the holoenzyme worked unequally on both intact as well as nicked types of DNA

c.Core subunit α2ββσ can not perform polymerization on to the intact DNA while perform some of the activity on to the nicked DNA

d.Core subunit α2ββσ can not perform polymerization on to the intact DNA AS WELL AS  to the nicked DNA

TLS Online TPP Program

#Question id: 26450

#Unit 3. Fundamental Processes

Which of the following statements is true regarding bacterial RNA polymerase   

a. Core enzyme can efficiently transcribe both intact and nicked DNA 

b. Sigma destabilizes nonspecifically bound core 

c. Holoenzyme bind tightly to DNA 

d. Higher disassociation rate at lower temperature 

e. Most of the cellular sigma are house keeping gene

TLS Online TPP Program

#Question id: 26451

#Unit 3. Fundamental Processes

Which of the following characteristics of sigma affect non specific binding of the core

TLS Online TPP Program

#Question id: 26452

#Unit 3. Fundamental Processes

Holoenzyme shows highest affinity at

TLS Online TPP Program

#Question id: 26453

#Unit 3. Fundamental Processes

Some of the sigma subunit of E. coli and function is given, Choose which of the following is incorrectly matched