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

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#Question id: 28694

#Unit 2. Cellular Organization

Which one of the following was first identified through mutations in the yeast gene and encoding a protein called Sec61α?

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#Question id: 28695

#Unit 2. Cellular Organization

O-linked oligosaccharides is representing the attachment of glycoproteins to the hydroxyl (–OH) group in which amino acid residue?

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#Question id: 28696

#Unit 2. Cellular Organization

N-linked oligosaccharide is attaching carbohydrate chain to the amide nitrogen of which amino acid residue?

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#Question id: 28697

#Unit 2. Cellular Organization

Biosynthesis of all N-linked oligosaccharides begins in the rough ER with a preformed branched oligosaccharide precursor containing_____

i) Glucose (Glc)

ii) Galactose

iii) Mannose (Man)

iv) N-acetylglucosamine (GlcNAc)

v) N-acetylgalactosamine (GalNAc)

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#Question id: 28698

#Unit 2. Cellular Organization

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

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#Question id: 28699

#Unit 2. Cellular Organization

First sugar residue is attached to dolichol by ___