WeeklyQuiz3 - OLD

WeeklyQuiz3 - OLD - Week 3 Quiz 1. How do the and forms of...

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Week 3 Quiz 1. How do the α and β forms of glucose differ? A. Their ring structures differ in the location of a hydroxyl group. B. Their linear structures differ in the location of a hydroxyl group. C. The β form can be involved in 1,4 and 1,6 glycosidic linkages; the α form can participate only in 1,4 linkages. D. The oxygen atom inside the ring is located in a different position. Answer : A See figure 5.3 2. Which of the following can vary among monosaccharides? A. the number of carbon atoms B. the presence [or absence] of a carbonyl group C. the presence [or absence] of hydroxyl groups D. all of the above Answer : A This question, which came from the test bank supplied by the publisher, needed to be interpreted very literally. It’s clearer with the words I’ve added in brackets, and I have modified it in myCourses so it will include the new wording if it turns up on the exam. 3. What is the major structural difference between starch and glycogen? A. the types of monosaccharide subunits in the molecules B. the type of glycosidic linkages in the molecule C. whether glucose is in the α or β form D. the amount of branching that occurs in the molecule Answer : D See Table 5.1. 4. Enzymes that readily break starch apart cannot hydrolyze the glycosidic linkages found in cellulose. Why is this logical?
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WeeklyQuiz3 - OLD - Week 3 Quiz 1. How do the and forms of...

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