USE Structures to answer questions 4 and 5

Part II. The structures of several D sugars are shown below. Use them to answer questions in this section. (1-4: 2.5 pts. each; 5:6 pts.) D-ribose D-glucose D-fructose 4. Comparing the ring forms of D-glucose e would find 1. They are both furanoses. 2. They are both pyranonses. 3. D-glucose forms a furanose and D-sorbose forms a pyranose. 4. D-glucose forms a pyranose and D-sorbose forms a furanose. 5. None of the above are true. 5. Draw the ring forms of D-glucose and D-sorbose. (6 pts.)