Bio ada 2009

[299678]

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Q. Although entropy continually increases within the universe as a whole, developing organisms gradually become more organized. Which of the following are these organisms capable of doing to aid this process?

a. Lowering activation energy with enzymes
b. violating the second law of thermodynamics
c. using external sources of energy
d. Concentrating their own molecules so that energy flow is reversed
e. creating energy

I thought that both c and e are correct answer! what do you think?

 

[DATlongshui]

Q. Although entropy continually increases within the universe as a whole, developing organisms gradually become more organized. Which of the following are these organisms capable of doing to aid this process?

a. Lowering activation energy with enzymes
b. violating the second law of thermodynamics
c. using external sources of energy
d. Concentrating their own molecules so that energy flow is reversed
e. creating energy

I thought that both c and e are correct answer! what do you think?

e would be wrong as it violates first law of thermodynamics--energy can't be created or destroyed, but only transfered....

Laws of thermodynamics:
1st: in any process, total energy of the universe (=system+surrounding) remains constant. Energy can neither be created nor destroyed. Also applied to isolated system (refers to ΔU=Q−W)
2nd: it is NOT possible to change heat completely into work or transfer heat from cooler to warmer wo another change taking place. Furthermore, in any thermodynamic process, the entropy of a system remains unchanged or increases. All spontaneous processes lead to entropy of the universe to increase.
3rd: impossible to reach absolute zero of Tm, when all processes cease and entropy minimal value.

 

[sfoksn]

i think it should be the lowering activation energy one.

that's how body builds stuff that would not be built w/o enzymes.