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TLS Online TPP Program

#Question id: 12972

Under  some  circumstances a  population  can  split  into  two  or  more  species  without  the  existence of  geographic barriers. All of the following genetically determined behaviours could provide conditions leading to speciation EXCEPT

#Unit 10. Ecological Principles
  1. Selection of a specific host fruit for completion of the life cycle by a fruit fly
  2. Association of courtship with a particular habitat type in a sparrow
  3. Choice by a butterfly of the time of day to breed
  4. Selection of prey types by a wide-ranging Hawk
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TLS Online TPP Program

#Question id: 26466

#Unit 3. Fundamental Processes

Which of the following protein act as alarm and responsible for the production the “alarmone”
TLS Online TPP Program

#Question id: 26467

#Unit 3. Fundamental Processes

Which of the following protein reduces the lifetimes of the rrn open promoters to a level at which they are responsive to changes in iNTP and ppGpp concentrations
TLS Online TPP Program

#Question id: 26468

#Unit 3. Fundamental Processes

RNA polymerase performs two proofreading functions on that growing transcript Choose the correct statement regarding the proofreading functions
a.in the pyrophosphorolytic editing catalyze the removal of an incorrectly inserted ribonucleotide, by reincorporation of PPi
b.In the pyrophosphorolytic editing the polymerase backtracks by one or more nucleotides and cleaves the RNA product
c.In hydrolytic editing, the polymerase backtracks by one or more nucleotides and cleaves the RNA product
d.In hydrolytic editing, catalyze the removal of an incorrectly inserted ribonucleotide, by reincorporation of Ppi
TLS Online TPP Program

#Question id: 26469

#Unit 3. Fundamental Processes

RNA proofreading and backtrack in the prokaryotes is done by
TLS Online TPP Program

#Question id: 26470

#Unit 3. Fundamental Processes

Choose which of the following statement is incorrect regarding the TCRF
TLS Online TPP Program

#Question id: 26471

#Unit 3. Fundamental Processes

Intrinsic terminators are responsible for prokaryotic transcription termination, so which of the following is the characteristics of Intrinsic terminators
a. It  include palindromic regions 
b. It do not include palindromic regions 
c. Palindromic regions that form hairpins varying in length from 7 to 20 bp
d. The stem-loop structure includes a G-C–rich region and is followed by a run of 7U residues.