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QUESTION 1 10 points Save Answer Which of the following structures is a representation of a cyclic form of D-glucose? CH2 OH o OH OH HO OH CH2OH O OH OH ON HO CH2 OH HO OH OF OH any of the above structures are possible forms of D-glucose QUESTION 2 10 points Save Answer Which group of carbohydrates cannot be hydrolyzed to give smaller molecules? monosaccharides trisaccharides disaccharides polysaccharides QUESTION 3 10 points Save Answer When a monosaccharide forms a ring by interaction of one of its hydroxyl groups with its aldehyde group, what type of structure is formed? hemiacetal acetal gycoside ester QUESTION 4 19 points Question Select the correct monosaccharide for each of the following descriptions. Answers may be used once, more than once, or not at all. - combines with glucose to form A. ribose lactose B. galactose the sweetest carbohydrate C. glucose component of ribosomal nucleic acid D. fructose (RNA) "building block" of sucrose, lactose, starch, and cellulose sugar also known as dextrose and blood sugar QUESTION 5 10 points Save Answer Which of the following structures is that of D-glucose? CH2OH O HO H H OH H OH CH2OH O CHO H OH HO H HO H H OH CH2OH CHO H OH H OH H OH CH2OH O CHO H OH HO H H OH H OH CH2OH QUESTION 6 Which of the following compounds is an aldohexose? CHO HO H HO H CH2OH O CH2OH O HO H H OH H OH CH2OH O CHO H OH H OH H OH CH2OH CHO H OH HO H HO H H OH CH2OH QUESTION 7 10 points Save Answer A sugar is classified as a D-isomer if the hydroxyl group on the chiral carbon nearest to the carbonyl points to the vightestion Completion Status: on the chiral carbon farthest from the carbonyl points to the right on the chiral carbon nearest to the carbonyl points to the left on the chiral carbon farthest from the carbonyl points to the left QUESTION 8 10 points Save Answer Classify the monosaccharide shown below according to its carbonyl group and the number of carbon atoms. CHO HO H HO H H OH CH2OH aldopentose aldotetrose QUESTION 9 10 points Save Ar Which of the following types of monosaccharides have cyclic forms that involve a 5-memebered ring? aldopentoses and ketopentoses aldohexoses and ketopentoses aldopentoses and ketohexoses aldohexoses and ketohexoses QUESTION 10 10 points Save Ar Which carbohydrate is a D-isomer? CHO H OH HO H H OH H OH CH2OH O CHO H OH HO H Question Completion H OH HO H CH2OH CHO H OH H OH H OH HO H CH2OH O HO'HO H OH H H OH OHO on the chiral carbon nearest to the carbonyl points to the left on the chiral carbon farthest from the carbonyl points to the left QUESTION 8 Classify the monosaccharide shown below according to its carbonyl group and the number of carbon atoms. CHO HO H HO H H OH CH2OH aldopentose ketotetrose ketotriose aldotetrose QUESTION 9 Which of the following types of monosaccharides have cyclic forms that involve a 5-memebered ring? aldopentoses and ketopentoses aldohexoses and ketopentoses aldopentoses and ketohexoses aldohexoses and ketohexoses QUESTION 10 Which carbohydrate is a D-isomer? CHO H OH HO H H OH H OH CH2OH CHO H OH HO H H OH HO H CH2OH QUESTION 1 10 points Save Answer In which of the following sugars is the bonding between monosaccharide units in a "1,2" configuration? cellobiose lactose maltose sucrose QUESTION 3 10 points Save Which of the following is not a reducing sugar? glucose sucrose lactose fructose QUESTION 4 10 points Save Select the correct polysaccharide for each of the following descriptions. Answe used once, more than once, or not at all. - cannot be digested by humans A. glycogen stores energy in the human body B. amylopectin used to build cell walls in plants C. cellulose unbranched carbohydrate that stores D. amylose glucose in plants - branched carbohydrate that stores glucose in plants QUESTION 5 10 points Save Which of the following statements is incorrect? Question Comple reducing sugars give a positive Benedict's test the product of oxidation of an aldose is a carboxylic acid the product of reduction of mannose is mannic acid all of the above QUESTION 6 10 points Save A glycosidic bond between two monosaccharides can also be classified as an ether bond an alcohol bond a double bond an achiral bond QUESTION 7 10 points Save sucrose maltose lactose all of the above QUESTION 8 10 points Save Answer Reduction reactions of monosaccharides are due to the presence of at least one chiral carbon atom the presence of a carbonyl group the presence of more than one hydroxyl group their cyclic structures QUESTION 9 10 points Save Answer The major structural difference between cellulose and starch is found in the identity of the monosaccharide units present hardness of the monosaccharide units present linkages between the monosaccharide units present ring size of the monosaccharide units present QUESTION 10 10 points Save Answer Which of the following polysaccharides produces only glucose upon hydrolysis? glycogen starch Question Completion Status: cellulose all of the above

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