[Campbell Biology P.194] The second law of thermodynamics states that every energy transfer ... | Practice Question

The second law of thermodynamics states that every energy transfer or transformation increases the disorder of the universe. Which of the following is an example of increased disorder resulting from a biological energy transformation?

  • A: A plant converting sunlight into chemical energy.
  • B: A diver gaining potential energy by climbing to a higher platform.
  • C: A brown bear releasing heat and carbon dioxide as it runs.
  • D: Chemical energy stored in food molecules.

Explanation

The explanation for Figure 8.3b directly states: 'Every energy transfer or transformation increases the disorder entropy of the universe. For example, as the bear runs, disorder is increased around its body by the release of heat and small molecules that are the by-products of metabolism.'