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TLS Online TPP Program

#Question id: 24434

Which of the following is correct order of proton-driven rotation of the c ring

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. Arg210 rotates, displacing H+ from Asp → Proton displaces Arg210 to adjacent c subunit → Proton enters half channel on P side → Displaced H+ exits on N side → c10 ring rotates, Arg210 returns to P-side half-channel.
  2. Displaced H+ exits on N side→ Proton displaces Arg210 to adjacent c subunit → Arg210 rotates, displacing H+ from Asp → Proton enters half channel on P side→ c10 ring rotates, Arg210 returns to P-side half-channel.
  3. Proton enters half channel on P side → Proton displaces Arg210 to adjacent c subunit → Arg210 rotates, displacing H+ from Asp → Displaced H+ exits on N side → c10 ring rotates, Arg210 returns to P-side half-channel.
  4. Proton enters half channel on P side → Proton displaces Arg210 to adjacent c subunit → c10 ring rotates, Arg210 returns to P-side half-channel.→ Displaced H+ exits on N side → Arg210 rotates, displacing H+ from Asp.
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TLS Online TPP Program

#Question id: 24486

#Unit 3. Fundamental Processes

Splicing is an …………reaction that proceeds through a pentavalent phosphorous intermediate.
TLS Online TPP Program

#Question id: 24487

#Unit 3. Fundamental Processes

There are three type of Splicing Machinery match them correctly.
TLS Online TPP Program

#Question id: 24488

#Unit 3. Fundamental Processes

Which of the following are grouped as self splicing  
a. Nuclear 
b. group I 
c. group II
TLS Online TPP Program

#Question id: 24489

#Unit 3. Fundamental Processes

Two transesterification reactions takes place for 2 exon -1 intron configuration. Choose the correct  statement 
a. First transesterification is always caused by exon 1 -3’OH
b. second transesterification is catalysed variably either by external G or branch point while .
c. First transesterification is catalysed variably either by external G or branch point while 
d. second transesterification is always caused by exon 1 -3’OH.
TLS Online TPP Program

#Question id: 24490

#Unit 3. Fundamental Processes

There are three type of Splicing signals 1. Major U2-type or GU-AG introns 2. Minor U12-type or AU-AC introns & 3. Minor U12-type with GU-AG introns (hybrid type), which of the following is responsible for the recognition of branch point sequence UACUAAC?
TLS Online TPP Program

#Question id: 24491

#Unit 3. Fundamental Processes

There are three type of Splicing signals 1. Major U2-type or GU-AG introns 2. Minor U12-type or AU-AC introns & 3. Minor U12-type with GU-AG introns (hybrid type), which of the following is responsible for the recognition of branch point sequence CCUUAACU