Practice Carbs 2 PDF

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Practice Questions Carbohydrates 2

CHEM161, Spring 2020

1. Which of these polysaccharides is a branched polymer? a) chitin b) amylose c) cellulose d) amylopectin e) hyaluronic acid 2. Cellulose is a) a linear copolymer of glucose and galactose. b) a branched polymer of glucose. c) a linear polymer of glucose with β(1-4) linkages. d) a linear polymer of glucose with α(1-4) linkages. e) sometimes called starch. 3. N-linked oligosaccharides can be covalently linked to proteins at which amino acid? a) Gly b) Ser c) Glu d) Tyr e) Asn 4. O-linked oligosaccharides are commonly attached to the -OH group of _____________. a) ribose b) tyrosine c) lysine d) threonine e) glycine 5. Which of the following is not a homoglycan? a) Cellulose b) Glycogen c) Starch d) Heparin e) Amylose 6. Which of the following yields N-acetyl-D-glucosamine on hydrolysis (meaning the polysacch. is hydrolyzed into its monomers) a) Cellulose b) Heparin c) Chitin d) Amylopectin e) Amylose 7. The principal structural carbohydrate of plants is _________ a) Starch b) Glycogen c) Cellulose d) Amylose e) Xylulose

8. Which of the following polysaccharides cannot be digested by mammalian salivary, gastric, or intestinal enzymes? a) cellulose b) amylopectin c) amylose d) glycogen e) starch 9. Which of the following polysaccharides can bind exceptionally large amounts of water? a) Cellulose b) Glycogen c) Starch d) Heparin e) Amylose 10. In glycoproteins carbohydrate is most often linked to threonine, asparagine or __________. a) Serine b) Lysine c) Valine d) Aspartic acid e) Tyrosine...