Principles of Biochemistry 4th Edition Test bank by (Horton) latest 2024 ISBN:9780136217152 ALL CHAPTERS COVERED

,Contents
B




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




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

,Chapter 1 IntroductiontoBiochemistry
B B B




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




A) C, H, N, Mg, O, S B B B B B




B) C, H, N, O, P, S B B B B B




C) C, H, N B B




D) Fe, C, H, O, P B B B B




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




Answer: B B




Page Ref: Section 2
B B B




2) Proteins in biological membranes may be
B B B B B




A) porous.
B) attached to the membrane surface. B B B B




C) span the membrane. B B




D) All of the above B B B




E) B and C only B B B




Answer: D B




Page Ref: Section 3
B B B




3) Which statement about cellulose is false?
B B B B B




A) It is the most abundant polysaccharide in nature.
B B B B B B B




B) Its monomers are joined by glycosidic bonds.
B B B B B B




C) It is present in the stems of flowering plants.
B B B B B B B B




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




fibers.B




E) It is a branched polymer of glucose.
B B B B B B




Answer: E B




Page Ref: Section 3
B B B




1

, 4) WhenKeq ofa reaction =1, then
B
B
B B B B B




A) the forward reaction is faster than the reverse reaction.
B B B B B B B B




B) the reverse reaction is faster than the forward reaction.
B B B B B B B B




C) the forward and reverse reaction rate constants are equal.
B B B B B B B B




D) more products are formed than reactants.
B B B B B




E) fewer products are formed than reactants.
B B B B B




Answer: C B




Page Ref: Section 4
B B B




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




A) The forward rate constant is 1000 times greater than the reverse rate constant.
B B B B B B B B B B B B




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




C) The forward rate constant is 1000 times smaller than the reverse rate constant.
B B B B B B B B B B B B




D) The forward rate constant is 3 times smaller than the reverse rate constant.
B B B B B B B B B B B B




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




Answer: A B




Page Ref: Section 4
B B B




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




Answer: D B




Page Ref: Section 4
B B B




7) A spontaneous chemical reaction always has a
B B B B B B B change.
B




A) positive Gibbʹs free energy B B B




B) negative Gibbʹs free energy B B B




C) positive enthalpy B




D) negative enthalpy B




E) positive entropy B




Answer: B B




Page Ref: Section 4
B B B




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