TLS Online TPP Program

#Question id: 2421


Listeria is a bacterial parasite that has evolved unique ways to enter animal cells and then use actin polymerization for its intracellular movement.  Which of the following statements is true in regard to Listeria and actin polymerization?

#Unit 2. Cellular Organization
  1. Listeria ActA protein binds and inactivates the Arp2/3 complex.

  2. Listeria ActA binds VASP, which enhances ATP-actin assembly.

  3. Cofilin is necessary to accelerate the assembly of the (−) end of the filament.

  4. CapZ promotes the elongation of the filament.

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TLS Online TPP Program

#Question id: 26497

#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: 26498

#Unit 3. Fundamental Processes

Which of the following shows correct bond pattern in Lactose and Allolactose

TLS Online TPP Program

#Question id: 26499

#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: 26500

#Unit 3. Fundamental Processes

Choose the correct statement 
1.UACUAAC is branch point sequence for U2 type introns 
2.UACUAAC is branch point sequence for U12 type introns
3.CCUUAAC is branch point sequence for U12 type introns
4.CCUUAAC is branch point sequence for U2 type introns

TLS Online TPP Program

#Question id: 26501

#Unit 3. Fundamental Processes

Splice sites are directional in nature

TLS Online TPP Program

#Question id: 26502

#Unit 3. Fundamental Processes

Splice sites are directional in nature. 5’ splice site -the left, or donor, site and the 3’ splice site - right, or acceptor, site. So, in below table the complex and their events are given match them correctly .