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TLS Online TPP Program

#Question id: 5005

Fossilized stromatolites

#Unit 11. Evolution and Behavior

  1. all date from 2.7 billion years ago.

  2. formed around deep-sea vents.

  3. resemble structures formed by bacterial communities that are found today in some warm, shallow, salty bays.

  4. provide evidence that plants moved onto land in the company of fungi around 500 million years ago.

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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: 26498

#Unit 3. Fundamental Processes

Which of the following shows correct bond pattern in Lactose and Allolactose
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: 26496

#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: 26495

#Unit 3. Fundamental Processes

Which of the following is (are) required for splicing to occur?
a. two transesterification reactions
b. intact, naturally occurring introns
c. formation of a lariat like structure 
d. a branch-point G residue
TLS Online TPP Program

#Question id: 26494

#Unit 3. Fundamental Processes

Class and abundance is given Match them correctly

 Class Abundance
 a. Nuclear pre-mRNA 1. Rare; nuclear rRNA in some eukaryotes, organelle genes, and a few prokaryotic genes 
 b. Group II introns 2. Rare; some eukaryotic genes from organelles and prokaryotes
 c. Group I introns 3. Very common; used for most eukaryotic genes