Multiple Choice
Reduction is the process of adding electrons to an atom or molecule?
3. Energy
Energy Sources and Generation
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Which of the following is a measure of the energy needed to move a sodium ion from a high concentration to a low concentration?
A
Kinetic Energy
B
Entropy
C
Potential Energy
D
Work
Verified step by step guidance1
Understand that moving a sodium ion from a high concentration to a low concentration involves a process known as diffusion, which is a passive transport mechanism.
Recognize that in passive transport, ions move down their concentration gradient, which means from an area of higher concentration to an area of lower concentration.
Identify that the energy associated with moving ions across a concentration gradient is related to the concept of 'work' in physics, which is the energy required to move an object against a force.
Recall that potential energy is the stored energy in a system due to its position or arrangement, and in the context of ions, it refers to the energy stored due to the concentration gradient.
Conclude that the measure of energy needed to move a sodium ion from a high concentration to a low concentration is related to the work done by the system, as it involves utilizing the potential energy stored in the concentration gradient.
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