TLS Online TPP Program

#Question id: 2953


If a cell in the G1 phase is fused with a cell in the S phase, then

#Unit 2. Cellular Organization
  1. the G1 nucleus will enter the S phase.

  2. the S nucleus will enter the G1 phase.

  3. both nuclei will enter the G2 phase.

  4. both nuclei will shut down.

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TLS Online TPP Program

#Question id: 28698

#Unit 2. Cellular Organization

the oligosaccharide precursor is assembled on a membrane- attached anchor called dolichol phosphate, which is___

TLS Online TPP Program

#Question id: 28699

#Unit 2. Cellular Organization

First sugar residue is attached to dolichol by ___

TLS Online TPP Program

#Question id: 28700

#Unit 2. Cellular Organization

Biosynthesis of all N-linked oligosaccharides begins in the rough ER with a preformed branched oligosaccharide precursor Glc3Man9(GlcNAc)2, Which of the following statements is incorrect about these biosynthesis?
a) the oligosaccharide precursor is assembled on a membrane- attached anchor called dolichol phosphate
b) First sugar residue is attached to dolichol by a glycosidic bonds & the other
sugars are added by high-energy pyrophosphate
c) Two N- acetylglucosamine (GlcNAc) and five mannose residues are added one at a time to a dolichol phosphate on the lumen
d) Four mannose and three glucose  residue are added one to a dolichol phosphate on the luminal side

TLS Online TPP Program

#Question id: 28701

#Unit 2. Cellular Organization

Which of the following inhibitors inhibits the synthesis of all N-linked oligosaccharides in cells?

TLS Online TPP Program

#Question id: 28702

#Unit 2. Cellular Organization

Oligosaccharyl transferase enzyme involves to transferred precursor oligosaccharide 

TLS Online TPP Program

#Question id: 28703

#Unit 2. Cellular Organization

Oligosaccharyl transferase enzyme involves to transferred precursor oligosaccharide from a dolichol lipid anchor to the tripeptide sequences, which of the following tripeptide sequences are substrates for oligosaccharyl transferase ?