Podcast
Questions and Answers
According to the first law of thermodynamics, the change in internal energy of a system during a transformation is equal to
According to the first law of thermodynamics, the change in internal energy of a system during a transformation is equal to
- $Q - W$
- $Q \div W$
- $Q \cdot W$
- $Q + W$ (correct)
Which of the following is true about exothermic reactions?
Which of the following is true about exothermic reactions?
- They have no change in heat
- They release heat (correct)
- They absorb heat
- They convert heat into work
What is the term used to describe the energy stored in certain biological molecules, such as ATP?
What is the term used to describe the energy stored in certain biological molecules, such as ATP?
- Mechanical energy
- Thermal energy
- Chemical energy (correct)
- Electrical energy
Which process converts sunlight into chemical energy?
Which process converts sunlight into chemical energy?
Which of the following statements best describes bioenergetics?
Which of the following statements best describes bioenergetics?
What is the first law of thermodynamics?
What is the first law of thermodynamics?
Which of the following is an example of energy transduction?
Which of the following is an example of energy transduction?
What do thermodynamic measurements help determine?
What do thermodynamic measurements help determine?
According to the first and second laws of thermodynamics, what happens to the entropy as the energy of the universe remains constant?
According to the first and second laws of thermodynamics, what happens to the entropy as the energy of the universe remains constant?
What does the equation $delta G = delta H - T delta S$ represent?
What does the equation $delta G = delta H - T delta S$ represent?
What does a negative value of $delta G$ indicate?
What does a negative value of $delta G$ indicate?
What is the significance of a positive value of $delta G$?
What is the significance of a positive value of $delta G$?
According to the second law of thermodynamics, events tend to proceed from a state of higher energy to a state of lower energy. This is because
According to the second law of thermodynamics, events tend to proceed from a state of higher energy to a state of lower energy. This is because
What is the relationship between entropy and the random movements of particles of matter?
What is the relationship between entropy and the random movements of particles of matter?
When a sugar cube dissolves in a cup of hot water, what happens to the entropy of the system?
When a sugar cube dissolves in a cup of hot water, what happens to the entropy of the system?
What is the relationship between the availability of energy and the randomness of the universe?
What is the relationship between the availability of energy and the randomness of the universe?
Which of the following is true about the equilibrium constant, Keq?
Which of the following is true about the equilibrium constant, Keq?
What does the dissociation constant, Kd, measure?
What does the dissociation constant, Kd, measure?
In which direction will a reaction proceed if Keq is greater than 1?
In which direction will a reaction proceed if Keq is greater than 1?
What is the equilibrium constant, Keq, for the reaction A + B -> C + D?
What is the equilibrium constant, Keq, for the reaction A + B -> C + D?
Which illustration in Figure 3.3 depicts an increase in the entropy of the universe?
Which illustration in Figure 3.3 depicts an increase in the entropy of the universe?
What happens to the entropy of the system when a sugar cube dissolves in a solution?
What happens to the entropy of the system when a sugar cube dissolves in a solution?
How can the entropy of an organism decrease?
How can the entropy of an organism decrease?
What is the relationship between information content and entropy in macromolecules?
What is the relationship between information content and entropy in macromolecules?
Which one of these is true about the ratio of reactants to products at equilibrium?
Which one of these is true about the ratio of reactants to products at equilibrium?
What happens if the total free energy of the reactants is greater than the total free energy of the products?
What happens if the total free energy of the reactants is greater than the total free energy of the products?
What happens as the reaction proceeds?
What happens as the reaction proceeds?
What happens at equilibrium?
What happens at equilibrium?
Why is not a useful term when comparing the energetics of various reactions?
Why is not a useful term when comparing the energetics of various reactions?
Under what conditions is the free-energy change of a biochemical reaction considered?
Under what conditions is the free-energy change of a biochemical reaction considered?
