TEST BANK FOR PRINCIPLES OF BIOCHEMISTRY, 5TH EDITION BY: MORAN, HORTON, SCRIMGEOUR, PERRY ALL CHAPTERS (1-23) COVERED COMPLETE NEW VERSION QUESTIONS AND ANSWERS GRADED A+ |2025-26|

,Contents
Chapter 1
z! Introduction to Biochemistry z! z! 1
Chapter 2
z! Water 10
Chapter 3
z! Amino Acids and the Primary Structures of Proteins
z! z! z! z! z! z! z! 27
Chapter 4
z! Proteins: Three-Dimensional Structure and Function
z! z! z! z! 46
Chapter 5
z! Properties of Enzymes z! z! 65
Chapter 6
z! Mechanisms of Enzymes z! z! 85
Chapter 7
z! Coenzymes and Vitamins z! z! 104
Chapter 8
z! Carbohydrates 119
Chapter 9
z! Lipids and Membranes
z! z! 137
Chapter 10
z! Introduction to Metabolism z! z! 153
Chapter 11
z! Glycolysis 169
Chapter 12
z! Gluconeogenesis, The Pentose Phosphate Pathway, z! z! z! z!


and Glycogen Metabolism
z! z! 185
Chapter 13
z! The Citric Acid Cycle
z! z! z! 199
Chapter 14
z! Electron Transport and Oxidative Phosphorylation
z! z! z! z! 213
Chapter 15
z! Photosynthesis 227
Chapter 16
z! Lipid Metabolism
z! 241
Chapter 17
z! Amino Acid Metabolism
z! z! 256
Chapter 18
z! Nucleotide Metabolism z! 269
Chapter 19
z! Nucleic Acids z! 284
Chapter 20
z! DNA Replication, Repair, and Recombination
z! z! z! z! 300
Chapter 21
z! Transcription and RNA Processing z! z! z! 315
Chapter 22
z! Protein Synthesis z! 330
Chapter 23
z! Recombinant DNA Technology z! z! 348

,Chapter 1 Introduction to Biochemistry
z! z! z!




1) Whichz! elementsz!accountz! forz ! morez! thanz!97%z! ofz!thez!weightz! ofz!mostz!organisms?
A) C,z ! H,z!N,z!Mg,z!O,z ! S
B) C,z ! H,z!N,z!O,z! P,z!S
C) C,z ! H,z!N
D) Fe,z!C,z ! H,z!O,z ! P
E) Ca2+,z!K+,z!Na+,z!Mg2+,z!Cl-

Answer:z ! B
Pagez ! Ref:z! Sectionz !2


2) Proteinsz!inz!biologicalz ! membranesz ! mayz!be
A) porous.
B) attachedz! toz!thez! membranez ! surface.
C) spanz ! thez!membrane.
D) Allz! ofz!thez!above
E) Bz!andz!Cz!only

Answer:z ! D
Pagez ! Ref:z! Sectionz !3


3) Whichz ! statementz!aboutz ! cellulosez!isz!false?
A) Itz ! isz!thez!mostz!abundantz ! polysaccharidez ! inz!nature.
B) Itsz!monomersz ! arez ! joinedz ! byz!glycosidicz ! bonds.
C) Itz! isz!presentz! inz!thez!stemsz!ofz!floweringz!plants.
D) Thez!hydroxylz!groupsz!ofz!neighboringz!cellulosez!moleculesz!interactz!toz!formz!strong,z!insoluble
z!fibers.



E) Itz ! isz!az ! branchedz! polymerz! ofz!glucose.

Answer:z ! E
Pagez ! Ref:z! Sectionz !3




1

, 4) Whenz!Keqz!ofz!az! reactionz!=z!1,z!then

A) thez!forwardz! reactionz!isz!fasterz! thanz ! thez!reversez ! reaction.
B) thez!reversez ! reactionz!isz!fasterz ! thanz! thez!forwardz! reaction.
C) thez!forwardz! andz ! reversez ! reactionz!ratez!constantsz! arez ! equal.
D) morez! productsz!arez ! formedz!thanz ! reactants.
E) fewerz ! productsz!arez ! formedz!thanz! reactants.

Answer:z ! C
Pagez ! Ref:z! Sectionz !4


5) Whichz ! statementz!isz!truez!aboutz ! az ! reactionz!withz!anz!equilibriumz!constant,z ! Keq,z!equalz ! toz!1000?

A) Thez! forwardz! ratez!constantz ! isz!1000z!timesz!greaterz ! thanz! thez!reversez ! ratez!constant.
B) Thez! forwardz!ratez!constantz ! isz!3z ! timesz!greaterz ! thanz! reversez ! ratez!constant.
C) Thez! forwardz! ratez!constantz ! isz!1000z!timesz!smallerz!thanz! thez!reversez! ratez!constant.
D) Thez! forwardz!ratez!constantz ! isz!3z ! timesz!smallerz!thanz ! thez!reversez ! ratez!constant.
E) Therez!isz!notz ! enoughz ! informationz ! givenz!toz!comparez!thez! forwardz! andz!reversez ! ratez!constants.

Answer:z ! A
Pagez ! Ref:z! Sectionz !4


6) Thez! studyz ! ofz!thez!energyz ! changesz ! duringz ! metabolicz!reactionsz ! isz!calledz! .
A) bioinformatics
B) metabodynamics
C) thermometrics
D) bioenergetics
E) biologicalz!heatz ! dynamics

Answer:z ! D
Pagez ! Ref:z! Sectionz !4


7) Az!spontaneousz ! chemicalz ! reactionz!alwaysz ! hasz ! az ! z! change.
A) positivez ! Gibbʹsz!freez! energy
B) negativez!Gibbʹsz!freez ! energy
C) positivez ! enthalpy
D) negativez ! enthalpy
E) positivez ! entropy

Answer:z ! B
Pagez ! Ref:z! Sectionz !4




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