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A comprehensive set of multiple-choice questions and answers covering key concepts in carbohydrate chemistry, including monosaccharide structure, disaccharide formation, polysaccharide types, and their functions in biological systems. It is a valuable resource for students studying organic chemistry or biochemistry, offering a structured review of important topics and testing their understanding.
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which .of .the .following .monosaccharides .is .a .ketose? A. .dihydroxyacetone B. .galactose C. .glucose D. .glyceraldehyde E. .idose .- .ANS โโ -A. .dihydroxyacetone when .two .carbohydrates .are .epimers: A. .one .is .a .pyranose, .the .other .is .a .furanose B. .one .is .an .aldose, .the .other .is .a .ketose C. .they .differ .in .length .by .one .carbon D. .they .differ .only .in .the .configuration .about .one .carbon .atom E. .they .react .differently .with .iodine .- .ANS โโ - D. .they .differ .only .in .the .configuration .about .one .carbon .atom which .pair .is .anomeric? A. .D-glucose .and .D-fructose B. .D-glucose .and .L-fructose C. .D-glucose .and .L-glucose D. .a-D-glucose .and .b-D-glucose E. .a-D-glucose .and .b-L-glucose .- .ANS โโ -D. .a-D-glucose .and .b-D-glucose lactose .is .made .from .linking .galactose .and .glucose. .when .this .happens, .______ _. A. .gas .is .eliminated B. .an .anomeric .carbon .is .formed .on .carbon- C. .water .is .release D. .an .epimer .is .formed E. .an .aldose .is .formed .- .ANS โโ -C. .water .is .released amylose .and .amylopectin .are .both .polymers .of: A. .a-D-glucose B. .b-D-glucose C. .galactose D. .idose E. .maltose .- .ANS โโ -A. .a-D-glucose which .statement .about .starch .and .glycogen .is .false?
A. .both .have .b-D-glucose .monomers B. .both .starch .and .glycogen .are .energy .storage .polysaccharides C. .both .are .homopolymers .of .glucose D. .glycogen .is .more .extensively .branched .than .starch E. .both .have .O-glycosidic .linkages .- .ANS โโ -A. .both .have .b-D- glucose .monomers which .monosaccharide .is .not .a .six-carbon .monosaccharide? A. .fructose B. .ribose C. .mannose D. .galactose E. .glucose .- .ANS โโ -B. .ribose which .statement .about .cellulose .is .true? A. .cellulose .is .the .primary .storage .polysaccharide .of .animal .cells B. .cellulose .is .a .highly .branched .polysaccharide C. .cellulose .is .a .homopolysaccharide D. .the .glucose .residues .of .cellulose .contain .the .same .configuration .as .the .gluc ose .residues .of .amylose E. .cellulose .is .an .anomer .of .chitin .- .ANS โโ - C. .cellulose .is .a .homopolysaccharide the .polysaccharide .cellulose .is .most .chemically .similar .to: A. .glycogen B. .dextrose C. .glycogen D. .chitin E. .starch .- .ANS โโ -D. .chitin which .of .the .following .is .the .most .common .monosaccharide .on .earth? A. .ribose B. .cellulose C. .chitin D. .sucrose E. .glucose .- .ANS โโ -E. .glucose the ."D" .in .the .D-carbohydrates .stand .for: A. .derivation B. .double C. .disaccharide D. .3-dimensional E. .dextrorotatory .- .ANS โโ -E. .dextrorotatory which .compound .does .not .fit .the .formula .of .a .carbohydrate? A. .C6H12O B. .C7H10O C. .C8H16O
A. .sugar B. .carbohydrate C. .energy .molecule D. .sucrose E. .starch .- .ANS โโ -A. .sugar which .of .the .following .monosaccharides .is .not .an .aldose? A. .erythrose B. .dihydroxyacetone C. .glucose D. .glyceraldehyde E. .robise .- .ANS โโ -B. .dihydroxyacetone which .pair .is .anomeric? A. .a-D-talose .and .B-D-talose B. .D-ribose .and .D-galactose C. .D-allose .and .L-fructose D. .D-galactose .and .L-galactose E. .a-D-mannose .and .B-L-mannose .- .ANS โโ -A. .a-D-talose .and .B-D-talose lactose .is .made .from .linkage .galactose .and .glucose. .when .this .happens,______ _. A. .a .polysaccharide .is .formed B. .gas .is .eliminated C. .an .epimer .is .formed D. .an .anomeric .carbon .is .formed .on .carbon- E. .lactose .forms .by .a .condensation .reaction .- .ANS โโ - E. .lactose .forms .by .a .condensation .reaction which .statement .about .starch .and .glycogen .is .false? A. .amylose .is .unbranched; .amylopectin .and .glycogen .contain .many .(a1-
- .branches B. .both .are .heteropolymers .of .glucose C. .both .have .many .-OH .groups .in .their .structures D. .both .starch .and .glycogen .are .energy .storage .polysaccharides E. .glycogen .is .more .extensively .branched .than .starcg .- .ANS โโ - B. .both .are .heteropolymers .of .glucose which .monosaccharide .is .not .a .six-carbon .monosaccharide? A. .idose B. .glucose C. .galactose D. .dihydroxyacetone E. .allose .- .ANS โโ -D. .dihydroxyacetone the .organic .molecule .that .is .produced .abundantly .by .photosynthesis .is .______ A. .ribose B. .glucose
C. .cellulose D. .chitin E. .sucrose .- .ANS โโ -B. .glucose which .compound .does .not .fit .the .formal .definition .of .a .carbohydrate? A. .C6H12O B. .C9H18O C. .C3H6O D. .C8H14O E. .C5H10O5 .- .ANS โโ -D. .C8H14O Amylose .has .a1->6 .branching .about .every .____ .residues A.. 1 .to. 10 B.. 8 .to. 12 C.. 10 .to. 30 D.. 24 .to. 30 E. .no .branching .- .ANS โโ -E. .no .branching when .forming .the .disaccharide .maltose .from .two .glucose .monosaccharides: A. .water .is .eliminated B. .gas .is .eliminated C. .an .anomeric .carbon .is .formed D. .an .epimer .is .formed E. .a .hydrogen .bond .is .formed .- .ANS โโ -A. .water .is .eliminated cellulose .and .chitin .are .both .polymers .of: A. .beta-D-glucose B. .galactose C. .alpha-D-glucose D. .idose E. .maltose .- .ANS โโ -A. .beta-D-glucose which .statement .about .starch .and .glycogen .is .false? A. .amylose .is .unbranched; .amylopectin .and .glycogen .contain .many .(a1-
- .branches B. .both .are .homopolymers .of .glucose C. .both .serve .primarily .as .structural .elements .in .cell .walls D. .both .starch .and .glycogen .are .energy-storage .polysaccharides E. .glycogen .is .more .extensively .branched .than .starch .- .ANS โโ - C. .both .serve .primarily .as .structural .elements .in .cell .walls which .monosaccharide .is .not .a .five-carbon .monosaccharide? A. .ribose B. .lyxose C. .xylose D. .erythrose E. .arabinose .- .ANS โโ -D. .erythrose
B. .glyceraldehyde C. .glucose D. .lactose E. .both .B .and .C .- .ANS โโ -E. .both .B .and .C which .pair .is .anomeric? A. .D-ribose .and .D-galactose B. .alpha-D-allose .and .beta-D-allose C. .D-ribose .and .L-fructose D. .D-glucose .and .L-glucose E. .alpha-D-idose .and .beta-L-idose .- .ANS โโ -B. .alpha-D-allose .and .beta-D-allose which .monosaccharide .is .not .a .six-carbon .monosaccharide A. .glyceraldehyde B. .atrose C. .galactose D. .talose E. .allose .- .ANS โโ -A. .glyceraldehyde carbohydrates .are .not .used .in .the .following .function: A. .structure B. .energy .storage C. .RNA .sugar D. .metabolic .intermediate E. .all .of .the .above .are .functions .- .ANS โโ -E. .all .of .the .above .are .functions which .of .the .following .monosaccharides .is .a .ketose? A. .glucose B. .fructose C. .galactose D. .mannose .- .ANS โโ -B. .fructose