We know biology covers all living things in the world and Physics examines the basic concpt such as energy, force space, time and all that dervices from mass, charges, matter and their motion. Broadly it is the general analysics of nature.While Bilogy is the science dealing with living organisms which are immeasurably more complicated than non living matters.
Biophysics is the application of physical laws to explan the properties of living organisms. It is the physics of life phenomena studied at all levels from molecules and cells to biosphere as a whole.
According to A.V. Hill-"Biophysics is the study of biiological function, organisation and structure of physical and physiochemical ideas and method."
According to vital force theory-Biological phenomena are basically incompressible on the basis of phsics and chemistry. Since there exists a certain mysterious vital forece or biological field which are not amenable to a physical interpretation.
The first law of thermodynamics tells conservation of energy was based on the observation of living organisms. According to uncertainity princliple the physio-chemical properties of living organism and life phenomena cant be studied. Simultaneously physiochemical and biological investibation are complementary to each other.
Schrodinger gave the concept of thermodynamical foundation of life. He stated that the living organisms"feed on negative entropies ie. the living organisms and the biosphere as a whole are not isolatedc but open system which exchange both matter and energy with the outisde world. He posed the question of stability of the substance of genes which is made up of light atoms; C, H, N,O.
Still the modern physics is not approching its limits of applicability for the treatment of biological phenomena but it points to the unlimited possibilities.
The living systems are basically open and therefore non equilibrium. A living organism is a thermodynamically open system which undergoes chemical reactions.Biochemical reactions are catalytic at all stages and protein-enzymes serve as catalyst. The change in entropy of such system is expressed by the sum of the entropy produced inside the system dis and the entropy supplied externally or given off the surrounding des
ds =d is - d es
The quantity dis is always positive according to the second law of thermodynamics. If the organism is placed in an insulating shell, the entropy flow des will be equal to zero and the entropy can only incerease . The entropy of the system is not at the maximum. For the stationary state, we have
ds = 0 ie. des = - dis <0
In other words, the entropy produced is given up completely to the surrouonding.
hey suresh, so as a project i need to relate bio and physics, specifically genetics, animal body system, evolution, plants and diversity of living things for bio. and for physics: kinematics, forces, energy, waves and sound, and electricity and magnetism. I have to relate two units of each together to one topic. This counts towards 15 percent towards our FINAL mark and it would be GREATLY appreciated if u can help me come up with idea, thank you so much :)
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