Thermodynamics of Biomolecular Systems MCQs
Thermodynamics of Biomolecular Systems MCQs
Our experts have gathered these Thermodynamics of Biomolecular Systems MCQs through research, and we hope that you will be able to see how much knowledge base you have for the subject of Thermodynamics of Biomolecular Systems by answering these multiple-choice questions.
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1: What is absolute entropy?
A. The ratio of system energy to its temperature
B. Entropy calculated relative to the absolute reference point determined by the third law of thermodynamics
C. The energy released by a system when it changes state
D. The average amount of energy stored in a system
2: What type of humidity is the mass of water vapour present in a unit mass of dry air?
A. Absolute or specific humidity
B. Relative humidity
C. Mixing ratio humidity
D. Dew point humidity
3: What is absolute pressure measured relative to?
A. Gauge pressure
B. Atmospheric pressure
C. Relative pressure
D. Absolute vacuum
4: What is involved in an absorption refrigeration system?
A. Absorption of a refrigerant by a transport medium
B. Evaporation of a refrigerant by a transport medium
C. Release of a refrigerant by a transport medium
D. Condensation of a refrigerant by a transport medium
5: What is the Adiabatic Flame Temperature?
A. Rate at which the combustion occurs
B. The temperature of the flames
C. Maximum temperature the products of combustion will reach
D. Temperature of the surrounding environment
6: What is the primary focus of thermodynamics in biomolecular systems?
A. The study of molecular structure and function
B. The study of energy transfer during chemical reactions
C. The study of energy changes and transformations in biological processes
D. The study of biomolecular interactions in cells
7: Which thermodynamic principle states that energy cannot be created nor destroyed, only converted from one form to another?
A. Boyle's Law
B. Newton's Third Law of Motion
C. First Law of Thermodynamics
D. Second Law of Thermodynamics
8: In biomolecular systems, what does "enthalpy" represent?
A. The disorder or randomness of molecules in a system
B. The total energy content of a system
C. The ability of a system to do work
D. The tendency of a system to reach equilibrium
9: What is the standard unit used to measure Gibbs free energy (∆G) in thermodynamics?
A. Joules (J)
B. Watts (W)
C. Kelvin (K)
D. Calories (cal)
10: For a spontaneous reaction at constant temperature and pressure, what is the sign of ∆G (Gibbs free energy change)?
A. Positive
B. Negative
C. Zero
D. It depends on the reaction
11: Which thermodynamic parameter indicates the degree of disorder or randomness in a biomolecular system?
A. Enthalpy (H)
B. Entropy (S)
C. Internal energy (U)
D. Helicity (H)
12: The equilibrium constant (K) of a biochemical reaction is related to the standard Gibbs free energy change (∆G°) by which equation?
A. ∆G° = RT ln(K)
B. ∆G° = RT/K
C. ∆G° = K/RT
D. ∆G° = -RT ln(K)
13: In a thermodynamic cycle, if the net change in internal energy (∆U) is zero, what can be said about the system?
A. The system is at equilibrium
B. The system underwent a spontaneous reaction
C. The system has gained energy from the surroundings
D. The system has undergone a cyclic process
14: Which thermodynamic law states that the entropy of a perfect crystal at absolute zero temperature is zero?
A. Zeroth Law of Thermodynamics
B. First Law of Thermodynamics
C. Second Law of Thermodynamics
D. Third Law of Thermodynamics
15: In biochemical systems, what is the role of thermodynamics in enzyme-catalyzed reactions?
A. To regulate enzyme activity
B. To predict the substrate specificity of enzymes
C. To determine the feasibility of chemical reactions and the direction they will proceed
D. Thermodynamics does not influence enzyme-catalyzed reactions
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Thermodynamics of Biomolecular Systems MCQs
