violation of entropy?

Question

the 2nd law of thermodynamics actually says that entropy is increased in every biological process.Then why it is decreased during protein synthesis form amino acids?

Answer 1

These laws are the old way of thinking.

The new science findings show these laws are not exactly firm.

The speed of light was faster then it is now.
http://www.cnn.com/2000/TECH/space/07/20/speed.of.light.ap/

Answer 2

The second Law of Thermodynamics states that the total entropy (disorder) of any isolated thermodynamic system tends to increase over time, approaching a maximum value; and so by implication, the entropy of the universe (the system and its surroundings), assumed as an isolated system, tends to increase.

During protein synthesis, protein molecules assume a folded conformation. They assume the conformation of greatest thermodynamic stability (the conformation of lowest energy for a given environment- ionic strength, temperature, pH, etc.).

As the protein is released from the ribosome, short-range interactions will cause various regions of the molecule to assume structures that are helical or extended. In other cases, turns will be produced in the molecule, and will allow the formation of hydrogen bonds which will yield b-structures. Areas containing non-polar amino acids will tend to become associated and will be removed from the aqueous phase. The energy gained from the removal of hydrophobic groups from the aqueous phase is large and is one of the primary driving forces for protein folding.

The folded proteins are usually compact, but there is still rotation allowed around many bonds in the molecules. This adds flexibility to the protein and yields a gain in conformational entropy which also adds to the stability. Some proteins may give up some of this flexibility by binding metal ions, cofactors, substrates, etc. This binding generally stabilizes the structures and makes them more rigid. The losses in entropy that occur must be offset by gains in binding energy.

So the short answer to your question is that during protein synthesis, energy is gained by the removal of the hydrophobic (water repelling) groups which results in greater organization. Since something has been removed from the process to gain this energy, it is therefore not a closed system that would be necessary for the Law of Entropy to apply.

I think you may have been a little confused when you stated that entropy is increased in every biological process. It would most definitely apply if it was a closed system. Entropy in the general sense means the dissipation of useful energy over time, so the amount of useful energy in the universe is always decreasing.

Answer 3

The Second Law of Thermodynamics states that entropy increases in a closed system, but protein synthesis from amino acids is not a closed system. Take a minute and think of why..

The Earth in its entirity is not a closed system because it recieves constant energy, which can counteract 2LOT-styled entropy locally, from the sun. This is at the cost of the sun gradually losing entropy over billions of years. The 2LOT is conserved, and we get protein synthesis. And everyone is happy. Right?

Answer 4

The second law doesn't say that at all.

What the law says is that you can decrease entropy any time you want, any place you want -- PROVIDED that you increase entropy by an equal or greater amount somewhere else at the same time.

Since the ultimate source for all biological energy is the Sun, and since the entropy of the Sun is increasing in vast amounts every second of every day, there is more than enough entropy increase in the Sun to counterbalance all entropy-lowering reactions in the biosphere.

Answer 5

Second law is:
The entropy of a closed system increases during all physical and chemical processes.
Key word:CLOSED SYSTEM.
Cells and protein synthesis(which is the process) happens as a open system.
For example, cells generate heat and this heat escapes and increases entropy.
Hope this is simple and it helps.

Answer 6

It isn't