Biochemistry
9th Edition
ISBN: 9781305961135
Author: Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher: Cengage Learning
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Chapter 16, Problem 3RE
RECALL Name which, if any, of the following groups are not aldose–ketose pairs: D-ribose and D-ribulose, D-glucose and D- fructose, D-glyceraldehyde and dihydroxyacetone.
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Biochemical reactions often look more complex than they really are. In the pentose phosphate pathway, sedoheptulose
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Sedoheptulose Glyceraldehyde
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Fructose
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Draw the mechanisms for the two steps of this reaction using curved double-barbed arrows to show the movement of electrons.
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Draw the first step of the reaction. : B represents a deprotonated base in the enzyme's active site.
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H.
Draw the first step of the rcaction. : B represents a deprotonated base in the enzyme's active site.
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Groups
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CH,OH
CH,OH
HO-C-H
H-C-OH
H-C-OH
CH,OPO;…
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Chapter 16 Solutions
Biochemistry
Ch. 16 - RECALL Define the following terms: polysaccharide,...Ch. 16 - RECALL Name which, if any, of the following are...Ch. 16 - RECALL Name which, if any, of the following groups...Ch. 16 - RECALL What is the difference between an...Ch. 16 - RECALL How many possible epimers of D-glucose...Ch. 16 - RECALL Why are furanoses and pyranoses the most...Ch. 16 - RECALL How many chiral centers are there in the...Ch. 16 - REFLECT AND APPLY Following are Fischer...Ch. 16 - REFLECT AND APPLY The sugar alcohol often used in...Ch. 16 - REFLECT AND APPLY Consider the structures of...
Ch. 16 - REFLECT AND APPLY Two sugars are epimers of each...Ch. 16 - REFLECT AND APPLY How does the cyclization of...Ch. 16 - REFLECT AND APPLY Convert the following Haworth...Ch. 16 - REFLECT AND APPLY Convert each of the following...Ch. 16 - REFLECT AND APPLY Starting with a Fischer...Ch. 16 - REFLECT AND APPLY Starting with the open-chain...Ch. 16 - RECALL What is unusual about the structure of...Ch. 16 - RECALL What is the chemical difference between a...Ch. 16 - RECALL Define the term reducing sugar.Ch. 16 - BIOCHEMICAL CONNECTIONS What are the structural...Ch. 16 - RECALL Name two differences between sucrose and...Ch. 16 - REFLECT AND APPLY Draw a Haworth projection for...Ch. 16 - BIOCHEMICAL CONNECTIONS What is the metabolic...Ch. 16 - REFLECT AND APPLY Draw Haworth projection formulas...Ch. 16 - BIOCHEMICAL CONNECTIONS A friend asks you why some...Ch. 16 - RECALL What are some of the main differences...Ch. 16 - RECALL How does chitin differ from cellulose in...Ch. 16 - RECALL How does glycogen differ from starch in...Ch. 16 - RECALL What is the main structural difference...Ch. 16 - RECALL What is the main structural difference...Ch. 16 - RECALL How do the cell walls of bacteria differ...Ch. 16 - REFLECT AND APPLY Pectin, which occurs in plant...Ch. 16 - REFLECT AND APPLY Advertisements for a food...Ch. 16 - REFLECT AND APPLY Explain how the minor structural...Ch. 16 - REFLECT AND APPLY All naturally occurring...Ch. 16 - REFLECT AND APPLY An amylose chain is 5000 glucose...Ch. 16 - REFLECT AND APPLY Suppose that a polymer of...Ch. 16 - REFLECT AND APPLY Glycogen is highly branched....Ch. 16 - REFLECT AND APPLY No animal can digest cellulose....Ch. 16 - REFLECT AND APPLY How does the presence of -bonds...Ch. 16 - REFLECT AND APPLY How do the sites of cleavage of...Ch. 16 - BIOCHEMICAL CONNECTIONS What is the benefit of...Ch. 16 - REFLECT AND APPLY How would you expect the active...Ch. 16 - REFLECT AND APPLY Would you expect cross-linking...Ch. 16 - REFLECT AND APPLY Compare the information in the...Ch. 16 - REFLECT AND APPLY Why is it advantageous that...Ch. 16 - REFLECT AND APPLY Why is the polysaccharide chitin...Ch. 16 - REFLECT AND APPLY Could bacterial cell walls...Ch. 16 - REFLECT AND APPLY Some athletes eat diets high in...Ch. 16 - Prob. 50RECh. 16 - REFLECT AND APPLY Blood samples for research or...Ch. 16 - REFLECT AND APPLY Based on what you know about...Ch. 16 - RECALL What are glycoproteins? What are some of...Ch. 16 - BIOCHEMICAL CONNECTIONS Briefly indicate the role...
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- RECALL Name which, if any, of the following are epimers of D-glucose: D-mannose, D-galactose, D-ribose.arrow_forwardRECALL Match each entry in Column a with one in Column b; Column a shows the names of some important functional groups, and Column b shows their structures. Column a Column b Amino group CH3SH Carbonyl group (ketone) CH3CH=CHCH3 Hydroxyl group Carboxyl group CH3CH2NH2 Carbonyl group (aldehyde) Thiol group CH3CH2OCH2CH3 Ester linkage Double bond Amide linkage CH3OH Etherarrow_forwardREFLECT AND APPLY Starting with a Fischer projection of D-fructose, write equations showing the formation of -D-fructopyranose, -D-fructofuranose, -D-fructopyranose, and -D-fructofuranose.arrow_forward
- RECALL Define the following terms: polysaccharide, furanose, pyranose, aldose, ketose, glycosidic bond, oligosaccharide, glycoprotein.arrow_forwardRECALL For each of the following, name an amino acid in which the R group contains it: a hydroxyl group, a sulfur atom, a second chiral carbon atom, an amino group, an amide group, an acid group, an aromatic ring, and a branched side chain.arrow_forwardREFLECT AND APPLY Why might some food companies find it economically advantageous to advertise their product (for example, triacylglycerols) as being composed of polyunsaturated fatty acids with trans-double bonds?arrow_forward
- RECALL Describe the various purposes of the citric acid cycle.arrow_forwardRECALL How many chiral centers are there in the open-chain form of glucose? In the cyclic form?arrow_forwardRECALL Identify the conjugate acids and bases in the following pairs of substances: (a) (CH3)3NH+/(CH3)3N (b) +H3NCH2COOH/+H3NCH2COO (c) +H3NCH2COO/H2NCH2COO (d) OOCCH2COOH/OOCCH2COO (e) OOCCH2COOH/HOOCCH2COOHarrow_forward
- RECALL What is the source of the glycerol in triacylglycerol synthesis?arrow_forwardRECALL A cholesterol sample is prepared using acetyl-CoA labeled with 14C at the carboxyl group as precursor. Which carbon atoms of cholesterol are labeled?arrow_forwardRECALL Is the term KM used with allosteric enzymes? What about competitive and noncompetitive inhibition? Explain.arrow_forward
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