Problem Set 2 S11

Problem Set 2 S11 - Problem Set 2 Chapters 5-7 1) Polymers...

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Problem Set 2 BILD1 / Spring 2011 Chapters 5-7 Dr. Kiger 1 1) Polymers of polysaccharides, fats, and proteins are all synthesized from monomers by A) connecting monosaccharides together. B) the addition of water to each monomer (hydrolysis). C) the removal of water (dehydration reactions). D) ionic bonding of the monomers. E) the formation of disulfide bridges between monomers. 2) (a) What is a condensation reaction, and in general terms, what does it form? (b) Draw an example of the use of a condensation reaction to form sucrose [hint: a (1,2) glycosidic linkage between α -glucose and β -fructose]. 3) Glucose comes in two forms – a straight chain form and a ring form. (a) Which form predominates in the cell? (b) There are two ring forms called α -glucose and β -glucose. How do these two forms differ from each other? (c) What compounds are composed primarily of glucose? How do they differ from each other? 4) (a) In general terms, what kind of monomer is shown in Figure 1? (b) Is the molecule in an alpha or beta form? FIGURE 1 5) Humans can digest starch but not cellulose because A) the monomer of starch is glucose, but the monomer of cellulose is galactose. B) humans have enzymes that can hydrolyse the beta (b) glycosidic linkages of cellulose but not the alpha (a) glycosidic linkages of starch. C) humans have enzymes that can hydrolyze the alpha (a) glycosidic linkages of starch but not the beta (b) glycosidic linkages of cellulose. D) humans harbor starch digesting bacteria but not cellulose digesting bacteria in their digestive tract. E) humans harbor cellulose digesting bacteria but not starch digesting bacteria in the digestive tract. 6)
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Problem Set 2 S11 - Problem Set 2 Chapters 5-7 1) Polymers...

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