Test Bank for Principles of Biochemistry, 5th Edition by Laurence A. Moran, H. Robert Horton| All Chapters1- 23 | Latest Edition

,Contents
Chapter1
nx IntroductiontoBiochemistry nx nx 1
Chapter 2
nx Water 10
Chapter 3
nx Amino Acids and the Primary Structures of Proteins
nx nx nx nx nx nx nx 27
Chapter 4
nx Proteins: Three-Dimensional Structure and Function
nx nx nx nx 46
Chapter 5
nx Properties of Enzymes nx nx 65
Chapter 6
nx Mechanisms of Enzymes nx nx 85
Chapter 7
nx Coenzymes and Vitamins nx nx 104
Chapter 8
nx Carbohydrates 119
Chapter 9
nx Lipids and Membranes
nx nx 137
Chapter10
nx IntroductiontoMetabolism nx nx 153
Chapter 11
nx Glycolysis 169
Chapter 12
nx Gluconeogenesis, The Pentose Phosphate Pathway, nx nx nx nx




and Glycogen Metabolism
nx nx 185
Chapter 13
nx The Citric Acid Cycle
nx nx nx 199
Chapter 14
nx Electron Transport and Oxidative Phosphorylation
nx nx nx nx 213
Chapter15
nx Photosynthesis 227
Chapter 16
nx Lipid Metabolism
nx 241
Chapter 17
nx Amino Acid Metabolism nx nx 256
Chapter 18
nx Nucleotide Metabolism nx 269
Chapter 19
nx Nucleic Acids nx 284
Chapter20
nx DNAReplication, Repair, and Recombination
nx nx nx nx 300
Chapter 21
nx Transcription and RNA Processing nx nx nx 315
Chapter22
nx ProteinSynthesis nx 330
Chapter 23
nx Recombinant DNA Technology nx nx 348

,Chapter 1 Introductionto Biochemistry
nx nx nx




1) Which elements account for more than 97% of the weight of most organisms?
n x nx n x n x n x nx n x nx nx n x nx nx




A) C, H, N, Mg, O, n x nx nx nx n x S
B) C, H, N, O, P, S n x nx nx n x nx




C) C, H, N n x nx




D) Fe, C, H, O, P nx n x nx n x




E) Ca2+, K+, Na+, Mg2+, Cl- nx nx nx nx




Answer: B n x




Page Ref: Section 2
nx nx nx




2) Proteins in biological membranes may be
nx nx n x n x nx




A) porous.
B) attached to the membrane surface. n x nx n x n x




C) span the membrane. n x nx




D) All of the above n x nx nx




E) B and C only nx nx nx




Answer: D n x




Page Ref: Section 3
nx nx nx




3) Which statement about cellulose is false?
n x nx n x nx nx




A) It is the most abundant polysaccharide in nature.
n x nx nx nx n x n x nx




B) Its monomers are joined by glycosidic bonds.
nx n x n x n x nx n x




C) It is present in the stems of flowering plants.
n x nx n x nx nx nx nx nx




D) The hydroxyl groups of neighboring cellulose molecules interact to form strong, insoluble
nx nx nx nx nx nx nx nx nx nx nx




fibers.
nx




E) It is a branched polymer of glucose.
n x nx n x nx n x nx




Answer: E n x




Page Ref: Section 3
nx nx nx




1

, 4) When Keq of a reaction =1, then
nx
nx
nx n x nx n
x nx




A) the forward reaction is faster than the reverse reaction.
nx n x nx nx n x n x nx n x




B) the reverse reaction is faster than the forward reaction.
nx n x nx nx n x n x nx n x




C) the forward and reverse reaction rate constants are equal.
nx n x n x n x nx nx n x n x




D) more products are formed than reactants. n x nx n x nx n x




E) fewer products are formed than reactants. n x nx n x nx n x




Answer: C n x




Page Ref: Section 4
nx nx nx




5) Which statement is true about a reaction with an equilibrium constant, Keq, equal to 1000?
n x nx nx nx n x n x nx nx nx nx n x nx n x nx




A) The forward rate constant is 1000 times greater than the reverse rate constant.
n x nx nx n x nx nx nx n x n x nx n x nx




B) The forward rate constant is 3 times greater than reverse rate constant.
n x nx nx n x nx n x nx n x n x n x nx




C) The forward rate constant is 1000 times smaller than the reverse rate constant.
n x nx nx n x nx nx nx nx n x nx n x nx




D) The forward rate constant is 3 times smaller than the reverse rate constant.
n x nx nx n x nx n x nx nx n x nx n x nx




E) There is not enough information given to compare the forward and reverse rate constants.
nx nx n x n x n x nx nx nx n x n x nx n x nx




Answer: A n x




Page Ref: Section 4
nx nx nx




6) The study of the energy changes during metabolic reactions is called
n x n x nx nx n x n x n x nx n x nx nx .
A) bioinformatics
B) metabodynamics
C) thermometrics
D) bioenergetics
E) biological heat dynamics nx n x




Answer: D n x




Page Ref: Section 4
nx nx nx




7) A spontaneous chemical reaction always has a
nx n x n x nx n x n x n x nxchange.
A) positive Gibbʹs free energy n x nx n x




B) negative Gibbʹs free energy nx nx n x




C) positive enthalpy n x




D) negative enthalpy n x




E) positive entropy n x




Answer: B n x




Page Ref: Section 4
nx nx nx




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