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Chem501 introduction to biochemistry exam 1 with answers
1. The enzyme fumarase catalyzes the reversible hydration of fumaric acid to l-malate, but it will not catalyze the hydration of maleic acid, the cis isomer of fumaric acid. This is an example of: A) biological activity. B) chiral activity. C) racemization. D) stereoisomerization. E) stereospecificity. 2. Enzymes are biological catalysts that enhance the rate of a reaction by: A) decreasing the activation energy. B) decreasing the amount of free energy released. C) increasing the activ...
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Chapter 2 Protein Composition and Structure
PopularChapter 2 Protein Composition and Structure 1) Which of the following is most often found in proteins? A) D-amino acids B) L-amino acids C) an equal amount of D- and L-amino acids D) amino acids with the -carbon exclusively having an R absolute configuration E) amino acids with the -carbon exclusively having an S absolute configuration Answer: B Section: 2.1
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BioChemistry Test Bank (All 1-23 chapters complete, Questions and Answers ) latest update
BioChemistry Test Bank (All 1-23 chapters complete, Questions and Answers ) latest update
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BioChemistry Test Bank (All 23 chapters complete, Questions and Answers with complete solutions
Chapter 5 Protein Function Multiple Choice Questions 1. Reversible binding of a protein to a ligand: oxygen-binding proteins Page: 157 Difficulty: 2 Ans: D The interactions of ligands with proteins: A) are relatively nonspecific. B) are relatively rare in biological systems. C) are usually irreversible. D) are usually transient. E) usually result i
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Chapter 5 Protein Function
Chapter 5 Protein Function Multiple Choice Questions 1. Reversible binding of a protein to a ligand: oxygen-binding proteins Page: 157 Difficulty: 2 Ans: D The interactions of ligands with proteins: A) are relatively nonspecific. B) are relatively rare in biological systems. C) are usually irreversible. D) are usually transient. E) usually result in the inactivation of the proteins. 2. Reversible binding of a protein to a ligand: oxygen-binding proteins Page: 158 Difficulty: 1 Ans: D ...
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Chapter 1 Biochemistry: An Evolving Science
Chapter 1 Biochemistry: An Evolving Science Multiple-Choice Questions 1) DNA is made from the building blocks adenine, guanine, cytosine and _____. A) uridine B) thymine C) inosine D) ribose E) None of the answers is correct. Answer: B Section: 1.2 2) The DNA backbone is made from repeating _____. A) monosaccharide units B) amino acid units C) sugar-phosphate units D) fatty acid E) None of the answers is correct. Answer: C Section: 1.2
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Biochemistry_Full_Test_Bank_Chapt Er_1_19 Er One Biochemistry : An Introduction
1) The ultimate source of energy for life on earth is . A) The sun B) Geothermal heat C) Carbohydrates D) Fats E) Other organisms 2) Which of the following is not a common component of biomolecules? A) Carbon B) Hydrogen C) Oxygen D) Nitrogen E) Chlorine 3) Which of the following is the basic structural unit of living organisms? A) Nucleus B) Cell membrane C) Tissue D) Cell
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BIO 3320 Quiz 1 Chemistry Test Bank (All 23 chapters complete, Questions and Answers with complete solutions
BIO 3320 Quiz 1 Chemistry Test Bank (All 23 chapters complete, Questions and Answers with complete solutions .(When trying to determine which direction the Beta sheet runs) Which direction does the arrow point? - ANSWER.Towards the C-Terminus. .1) Central alpha carbon connected via 4 covalent bonds: to - ANSWER.amino group, carboxyl group, hydrogen group, R-group .A nucleosome is made up of an ______, which is 2 copies of each of H2A, H2B, H3 and H4. - ANSWER.Octamer .About ____...
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BioChemistry Test Bank
BioChemistry Test Bank
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Bio-chemistry Test bank (All 23 chapters complete, Questions and Answers)
1) Which elements account for more than 97% of the weight of most organisms? A) C, H, N, Mg, O, S B) C, H, N, O, P, S C) C, H, N D) Fe, C, H, O, P E) Ca2+, K+, Na+, Mg2+, ClAnswer: B Page Ref: Section 2 2) Proteins in biological membranes may be A) porous. B) attached to the membrane surface. C) span the membrane. D) All of the above E) B and C only Answer: D Page Ref: Section 3 3) Which statement about cellulose is false? A) It is the most abundant polysaccharide in nature. B) ...
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