Test Bank For Biochemistry An Integrative Approach with Expanded Topics, 1st Edition by John T. Tans

Test Bank For Biochemistry An Integrative Approach with Expanded Topics, 1st Edition John T. Tansey Chapter 1-25 Chapter 1: The Chemical Foundations of Biochemistry MULTIPLE CHOICE 1. If a reaction at 37C has a H of 23 kJ/mol and a S of 337 J/Kmol, what is the G for the reaction? A) 65 kJ/mol B) –42 kJ/mol C) 18 kJ/mol D) –19 kJ/mol E) none of the above Answer: D Difficulty: Moderate Section: 1.1 Learning objective: Apply the basic principles of thermodynamics, equilibrium, and kinetics to biological systems. MULTIPLE CHOICE 2. The second law of thermodynamics states ______. A) that spontaneous processes are characterized by the overall conversion of order to disorder B) that spontaneous processes are characterized by the conversion of work to force C) that nonspontaneous processes are characterized by the conversion of order to disorder D) that spontaneous processes are characterized by the conversion of heat to pressure E) none of the above Answer: A Difficulty: Easy Section: 1.1 Learning objective: Apply the basic principles of thermodynamics, equilibrium, and kinetics to biological systems. MULTIPLE CHOICE 3. Change in enthalpy (H) is best defined as ______. A) the sum of heat absorbed and work done B) the heat transferred at constant pressure C) the pressure change at constant temperature D) the measure of disorder in a system E) none of the above Answer: B Difficulty: Easy Section: 1.1 Learning objective: Apply the basic principles of thermodynamics, equilibrium, and kinetics to biological systems. MULTIPLE CHOICE 4. A reaction with a ______ H and a ______ S will never be spontaneous. A) positive, positive B) positive, negative C) negative, positive D) negative, negative E) none of the above Answer: B Difficulty: Moderate Section: 1.1