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

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



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

,Chapter 1 Introductionto Biochemistry
v v




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




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




C) C, H, N v v




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




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




Answer: B
Page Ref: Section 2
v v v




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




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




C) span the membrane. v v




D) All of the above v v v




E) B and C only
v v v




Answer: D
Page Ref: Section 3
v v v




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




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




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




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




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



fibers.
v




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




Answer: E
Page Ref: Section 3
v v v




1

, 4) When Keq of a reaction =1, then
v v v v v v v




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




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




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




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




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




Answer: C
Page Ref: Section 4
v v v




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




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




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




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




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




E) There is not enough information given to compare the forward and reverse rate
v v v v v v v v v v v v



constants.
v




Answer: A
Page Ref: Section 4
v v v




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




Answer: D
Page Ref: Section 4
v v v




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




A) positive Gibbʹs free energy v v v




B) negative Gibbʹs free energy v v v




C) positive enthalpy v




D) negative enthalpy v




E) positive entropy v




Answer: B
Page Ref: Section 4
v v v




2