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You'll find the answer glucose best fits the definition of potential energy, as in it's standard state the glucose has all of it's energy stored in it's bonds (1). Every other answer is some sort of expenditure of energy (ATP in the case of firefly luciferase reaction, see (2)).


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Going by the answer, the key to interpret this question seems to be the absence of kinetic energy. Total Energy (mechanical) = Potential + Kinetic (let's ignore the pressure component as this question does not involve it). So the key to answer this question would be a system where the full energy is represented by the Potential energy. In a contracting ...


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My 2 pennies on this discussion Entropy in general is the total number of states a system can occupy which is also called degrees of freedom (so is with the supply of heat, the molecules vibrate and can occupy more states). Any system tries to avoid confinement and maximize the number of states it can occupy. However if the system is in a stable state and ...


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I would say A or D are acceptable, but A is probably the better answer: firstly, the entropy of the planet system alone is probably not increasing (indeed, it's probably near to constant) and as noted elsewhere, you need to consider a closed system to apply the Second Law, so you need to think about everything that comes to and leaves the Earth. This is the ...


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Evolution increases complexity (entropy) e.g., developing a new citrate path way in E. coli It does this process by of expending energy. i.e., via a lifeforms metabolism So to answer your question: A,B,C are all correct (or part of a correct answer) However D is the most correct answer (It is an all of the above type answer) E is a none of the above ...


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I think you are right and many examples are ambiguous. Even D) is ambiguous as a molecule is always in motion due to entropy except, perhaps, at absolute zero (0 Kelvin). But normally, it does contain kinetic energy. However, as you already identified the ambiguity, look at the best, or in this case least incorrect answer; The only option without any ...


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The Second Law is one of the most misunderstood and misapplied laws of thermodynamics. It has a scope largely confined to physics, nothing more should be read into it. Simply put, it states that "Heat cannot spontaneously flow from a colder location to a hotter location". (Wikipedia) There is nothing about life that violates that, or creates "negative ...


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However, I do not understand. Biological evolution does cause the system (living organisms)'s entropy to decrease. So, by the second law of thermodynamics, the entropy of the universe (in this case Earth), must have overall increased. The universe and the earth are not equatable. Earth is not an isolated system. Life causes entropy of the earth to ...



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