Below is the Fischer projection of D-galactose. Which is the proper Haworth projection of β-D-galactopyranose?

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#Question id: 12330

#Unit 10. Ecological Principles

Elephants are not the most common species in African grasslands. The grasslands contain scattered woody plants, but they are kept in check by the uprooting activities of the elephants. Take away the elephants, and the grasslands convert to forests or to shrublands. The newly growing forests support fewer species than the previous grasslands. Which of the following describes why elephants are the keystone species in this scenario?

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#Question id: 26567

#Unit 3. Fundamental Processes

E(var) mutations lie in genes whose products are needed to activate gene expression. They include members of 

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#Question id: 32243

#Unit 2. Cellular Organization

During assembly of clathrin-coated vesicle, which one of the following phospholipid is interact with AP2 complex?

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#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

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#Question id: 3505

#Unit 11. Evolution and Behavior

Patterns of relatedness are different in hymenopterans, which are haplodiploid. Which of the following value of relatedness R1, R2, R3 and R4 respectively in figure?