,Contents
Chapter51 Introduction5to5Biochemistry 1
Chapter52 Water 10
Chapter53 Amino5Acids5and5the5Primary5Structures5of5Proteins 27
Chapter54 Proteins:5Three-Dimensional5Structure5and5Function 46
Chapter55 Properties5of5Enzymes 65
Chapter56 Mechanisms5of5Enzymes 85
Chapter57 Coenzymes5and5Vitamins 104
Chapter58 Carbohydrates 119
Chapter59 Lipids5and5Membranes 137
Chapter510 Introduction5to5Metabolism 153
Chapter511 Glycolysis 169
Chapter512 Gluconeogenesis,5The5Pentose5Phosphate5Pathway,
and5Glycogen5Metabolism 185
Chapter513 The5Citric5Acid5Cycle 199
Chapter514 Electron5Transport5and5Oxidative5Phosphorylation 213
Chapter515 Photosynthesis 227
Chapter516 Lipid5Metabolism 241
Chapter517 Amino5Acid5Metabolism 256
Chapter518 Nucleotide5Metabolism 269
Chapter519 Nucleic5Acids 284
Chapter520 DNA5Replication,5Repair,5and5Recombination 300
Chapter521 Transcription5and5RNA5Processing 315
Chapter522 Protein5Synthesis 330
Chapter523 Recombinant5DNA5Technology 348
,Chapter 1 Introduction to Biochemistry
5 5 5
1) Which5 elements5account5 for5 more5 than5 97%5 of5the5 weight5 of5most5organisms?
A) C,5H,5N,5Mg,5O,5 S
B) C,5H,5N,5O,5P,5S
C) C,5H,5N
D) Fe,5C,5H,5O,5P
E) Ca2+,5 K+,5 Na+,5 Mg2+,5 Cl-
Answer:5 B
Page5Ref:5Section52
2) Proteins5in5biological5 membranes5 may5 be
A) porous.
B) attached5 to5the5 membrane5 surface.
C) span5 the5 membrane.
D) All5 of5the5above
E) B5and5C5only
Answer:5 D
Page5Ref:5Section53
3) Which5 statement5 about5 cellulose5 is5false?
A) It5 is5the5most5abundant5 polysaccharide5 in5nature.
B) Its5monomers5 are5 joined5 by5glycosidic5 bonds.
C) It5 is5present5 in5the5stems5of5flowering5 plants.
D) The5 hydroxyl5 groups5 of5neighboring5 cellulose5 molecules5 interact5 to5form5 strong,5 insolubl
e5fibers.
E) It5 is5a5 branched5polymer5 of5glucose.
Answer:5 E
Page5Ref:5Section53
1
, 4) When5Keq5of5a5 reaction5=51,5then
A) the5 forward5 reaction5is5faster5 than5 the5 reverse5 reaction.
B) the5 reverse5 reaction5is5faster5 than5 the5 forward5 reaction.
C) the5 forward5 and5 reverse5 reaction5rate5 constants5 are5 equal.
D) more5 products5are5 formed5 than5 reactants.
E) fewer5 products5 are5 formed5 than5 reactants.
Answer:5 C
Page5Ref:5Section54
5) Which5 statement5is5true5about5 a5 reaction5with5an5 equilibrium5 constant,5 Keq,5equal5 to51000?
A) The5 forward5 rate5 constant5 is510005 times5greater5 than5 the5reverse5 rate5constant.
B) The5 forward5 rate5 constant5 is535 times5greater5 than5 reverse5 rate5constant.
C) The5 forward5 rate5 constant5 is510005 times5smaller5than5 the5 reverse5 rate5 constant.
D) The5 forward5 rate5 constant5 is535 times5smaller5than5 the5 reverse5 rate5constant.
E) There5 is5not5 enough5 information5 given5 to5compare5 the5 forward5 and5 reverse5 rate5 constants.
Answer:5 A
Page5Ref:5Section54
6) The5 study5 of5the5 energy5 changes5 during5 metabolic5 reactions5 is5called .
A) bioinformatics
B) metabodynamics
C) thermometrics
D) bioenergetics
E) biological5 heat5 dynamics
Answer:5 D
Page5Ref:5Section54
7) A5 spontaneous5 chemical5 reaction5 always5 has5 a change.
A) positive5 Gibbʹs5 free5 energy
B) negative5 Gibbʹs5 free5 energy
C) positive5 enthalpy
D) negative5 enthalpy
E) positive5 entropy
Answer:5 B
Page5Ref:5Section54
2
Chapter51 Introduction5to5Biochemistry 1
Chapter52 Water 10
Chapter53 Amino5Acids5and5the5Primary5Structures5of5Proteins 27
Chapter54 Proteins:5Three-Dimensional5Structure5and5Function 46
Chapter55 Properties5of5Enzymes 65
Chapter56 Mechanisms5of5Enzymes 85
Chapter57 Coenzymes5and5Vitamins 104
Chapter58 Carbohydrates 119
Chapter59 Lipids5and5Membranes 137
Chapter510 Introduction5to5Metabolism 153
Chapter511 Glycolysis 169
Chapter512 Gluconeogenesis,5The5Pentose5Phosphate5Pathway,
and5Glycogen5Metabolism 185
Chapter513 The5Citric5Acid5Cycle 199
Chapter514 Electron5Transport5and5Oxidative5Phosphorylation 213
Chapter515 Photosynthesis 227
Chapter516 Lipid5Metabolism 241
Chapter517 Amino5Acid5Metabolism 256
Chapter518 Nucleotide5Metabolism 269
Chapter519 Nucleic5Acids 284
Chapter520 DNA5Replication,5Repair,5and5Recombination 300
Chapter521 Transcription5and5RNA5Processing 315
Chapter522 Protein5Synthesis 330
Chapter523 Recombinant5DNA5Technology 348
,Chapter 1 Introduction to Biochemistry
5 5 5
1) Which5 elements5account5 for5 more5 than5 97%5 of5the5 weight5 of5most5organisms?
A) C,5H,5N,5Mg,5O,5 S
B) C,5H,5N,5O,5P,5S
C) C,5H,5N
D) Fe,5C,5H,5O,5P
E) Ca2+,5 K+,5 Na+,5 Mg2+,5 Cl-
Answer:5 B
Page5Ref:5Section52
2) Proteins5in5biological5 membranes5 may5 be
A) porous.
B) attached5 to5the5 membrane5 surface.
C) span5 the5 membrane.
D) All5 of5the5above
E) B5and5C5only
Answer:5 D
Page5Ref:5Section53
3) Which5 statement5 about5 cellulose5 is5false?
A) It5 is5the5most5abundant5 polysaccharide5 in5nature.
B) Its5monomers5 are5 joined5 by5glycosidic5 bonds.
C) It5 is5present5 in5the5stems5of5flowering5 plants.
D) The5 hydroxyl5 groups5 of5neighboring5 cellulose5 molecules5 interact5 to5form5 strong,5 insolubl
e5fibers.
E) It5 is5a5 branched5polymer5 of5glucose.
Answer:5 E
Page5Ref:5Section53
1
, 4) When5Keq5of5a5 reaction5=51,5then
A) the5 forward5 reaction5is5faster5 than5 the5 reverse5 reaction.
B) the5 reverse5 reaction5is5faster5 than5 the5 forward5 reaction.
C) the5 forward5 and5 reverse5 reaction5rate5 constants5 are5 equal.
D) more5 products5are5 formed5 than5 reactants.
E) fewer5 products5 are5 formed5 than5 reactants.
Answer:5 C
Page5Ref:5Section54
5) Which5 statement5is5true5about5 a5 reaction5with5an5 equilibrium5 constant,5 Keq,5equal5 to51000?
A) The5 forward5 rate5 constant5 is510005 times5greater5 than5 the5reverse5 rate5constant.
B) The5 forward5 rate5 constant5 is535 times5greater5 than5 reverse5 rate5constant.
C) The5 forward5 rate5 constant5 is510005 times5smaller5than5 the5 reverse5 rate5 constant.
D) The5 forward5 rate5 constant5 is535 times5smaller5than5 the5 reverse5 rate5constant.
E) There5 is5not5 enough5 information5 given5 to5compare5 the5 forward5 and5 reverse5 rate5 constants.
Answer:5 A
Page5Ref:5Section54
6) The5 study5 of5the5 energy5 changes5 during5 metabolic5 reactions5 is5called .
A) bioinformatics
B) metabodynamics
C) thermometrics
D) bioenergetics
E) biological5 heat5 dynamics
Answer:5 D
Page5Ref:5Section54
7) A5 spontaneous5 chemical5 reaction5 always5 has5 a change.
A) positive5 Gibbʹs5 free5 energy
B) negative5 Gibbʹs5 free5 energy
C) positive5 enthalpy
D) negative5 enthalpy
E) positive5 entropy
Answer:5 B
Page5Ref:5Section54
2
