TLS Online TPP Program

#Question id: 18752


polymerases are available with proof reading activity. Which of the following are the characteristics of these types of polymerases?

#Unit 13. Methods in Biology
  1. They add A residue at 3’ end
  2. They are obtained from Thermococcus litoralis
  3. They can’t be obtained from archaebacteria
  4. The marine bacteria from which they are obtained grow at temperatures lower than that of Thermus aquatics
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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