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TLS Online TPP Program

#Question id: 12760

Which of the examples below provides appropriate abiotic and biotic factors that might determine the distribution of the species in question?

#Unit 10. Ecological Principles
  1.  The amount of nitrate and phosphate in the soil and wild flower abundance and diversity
  2.  The number of frost-free days and competition between species of introduced grasses and native alpine grasses
  3.  Increased predation and decreased food availability and a prairie dog population after a prairie fire
  4. Available sunlight and increased salinity in the top few meters of the ocean and the abundance and diversity of phytoplankton communities
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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 .

 Column 1 Column 2
 1. E complex a. Joining of U4/6 and U5 tri-snRNPs
 2. A complex b. U2 addition to base pair with the branch site in the presence of ATP
 3. B1 complex c. Formation of commitment complex in which U1 is base paired with the 5' splice site 
TLS Online TPP Program

#Question id: 26503

#Unit 3. Fundamental Processes

Match the following

 Protein Function
 1. Prp 5 a. helps the release of the mature mRNA from the spliceosome 
 2. Brr 2 b. is responsible for the activation of the spliceosome
 3. Prp 2 c. facilitates U1 and U4 release
 4. Prp 22 d. is critical for U2 binding
TLS Online TPP Program

#Question id: 26504

#Unit 3. Fundamental Processes

SR proteins are involved in exon definition in which they interact with U1 and U2AF forming the commitment for