True False Each alpha 1,4-glucosidically linked glucose unit in amylose is rotat

Question

True False  Each alpha 1,4-glucosidically linked glucose unit in amylose is rotated 180 degrees relative to its neighbor, and intra-chain hydrogen bonds form between ring oxygens and the C-3 hydroxyls on adjacent glucoses.

True False  The hormone erythropoeitin has three branched carbohydrate structures linked to asparagines and one carbohydrate chain linked to a serine.

True False  Polyclonal antibodies are mixtures of antibodies that each recognize different surface features (or epitopes) on a protein antigen.

Explanation / Answer

False. Glucose units in amylose are in same order. However, they are 180 degree rotated in cellulose. Also, H-bonds are formed between O bound at the 2-C of one glucose and the 3-C of the next glucose.

True. Erythropoitin is glycosylated with a Ser-(O)-linked oligosaccharide and 3 Asn-(N)-linked oligosaccharides.

True. Polyclonal antibodies are mixtures of various antibodies derived from different B-cells. Each antibody binds with a unique epitope on the antigen.

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