Which of the following apply to the synthesis of plant cell walls? Please select all that apply.

a) Cellulose microfibrils are formed by cellulose synthase complexes called rosettes

b) Cellulose is synthesized using cytoplasmic ATP-glucose and deposited as microfibrils directly on the outer surface of the plasma membrane.

c) Matrix polysaccharides of plant cell walls are synthesized in the Golgi apparatus and exported to the cell wall by endocytosis.

d) The direction of cellulose microfibril growth is determined by the orientation of arrays of microtubules lying just below the plasma membrane.

TLS Online TPP Program

#Question id: 24485

#Unit 3. Fundamental Processes

Ser – 2-P  active RNA Pol II to function most efficiently, dephosphorylating Ser – 2 leads to the re-initiation of  , this dephosphorylation of Ser – 2  done by

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?