Question

In: Biology

Which one of the following is NOT correct for biophysical system? Select one: a. Biophysical systems...

Which one of the following is NOT correct for biophysical system?

Select one:

a. Biophysical systems can neither create nor destroy energy.

b. Will reach thermal equilibrium during their lifetime

c. Biophysical processes removed from equilibrium will produce an increase in entropy.

d. When biophysical systems, including physiological ones, have an increase in energy produced by ordering the local environment, there must be a greater decrease in energy in the energy of the universe

e. Biophysical systems in living organisms must have a constant input of energy to remain alive

Solutions

Expert Solution

Answer ;

Correct choice is D.

Biophysical systems cant influence total energy of the universe. It remains constant.

Biophysical systems include atmosphere, hydrosphere, lithosphere and biosphere. In earth's biosphere solar energy is input and thermal energy is the output. Entropy is the measure of a systems thermal energy per unit temperature that is unavailable for doing useful work.

Biophysical systems cant break laws of thermodynamics. Energy can never be created never destroyed. The total entropy of universe must increase in every process. The entropy of a pure crystalline compound T=0 kelvin is zero.

Thermal equilibrium is thermal energy recieved equals thermal energy released. In a life time it there will be thermal equilibrium for a living thing. Biophysical process removed from equilibrium means work done. When work is done entropy increases. There should be a constant energy input for living organisms to sustain life as food, thermal energy etc.


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