Question

Biochemistry; Understand and be able to apply, the first and second law of thermodynamics and their application in understanding energy use in biological systems, including the special standard conditions defined in biochemistry.

and be able to apply, the first and second laws of thermodynamics and their application in understanding energy use in biological systems, including the special standard conditions defined in biochemistry Understand the relation between standard free energy changes and equilibrium constants, and hetwren th

Answer 1

Theses principal regulate the chemical process or metabolism in all biological organisms.

First Law of Thermodynamics

It is also known as law of conservation energy can nithern be created or nor distroyed,it may cahnge from one another but the energy in the closed system remains constant.

Second Law of Thermodynamics.

The second law state that no natural process can occur unless it is accompanied by an increase in the entropy of the universe.stated differently ,an isolated system will always tend to disorder.

- There are three types of system in Thermodynamics.

1 Open

2 Closed

3 Isolated

Let's take a closer look how Law of Thermodynamics apply to living beings.

The 1 st Law of Thermodynamics

Example

Light buldb transformer electrical energy into Light energy called Radiant energy.

Pool ball hits another transferring Kinetics energy.

Plant convert the energy of sunlight into chemical energy stored in organic molecules .

2nd Law of Thermodynamics

Let's consider the example of Oxidation of glucose

C6H12O6 + 6O2 -> 6CO2 +6H2O

The atom contained in one molecule of glucose and 6 molecules of Oxygen total 7 molecules are randomly disappeared by this oxidation reaction and now present in 12 molecules with more freedom of molecular motion.

In simple words, when ever a chemical reaction results in an increase in number of molecules or when a solid substance is converted into liquid or gaseous product that allows more freedom of molecular movement than solid ,molecu mol disorder thus entropy increase.