Bioenergetics is the study of energy relationships and energy transformation in living anyonusms. Food contain potential energy in the bonds when these bonds are broken down a large amount of kinetic energy is usually released same of this energy is stored in the form of potential energy in the bonds of ATP molecules while the rest escapes as heat. The potential energy stored in ATP is again transformed into kinetic energy to carry out life activities.
various life process in organisms involve constant flow of energy.This energy flows comprises the acquisition, transformation and use of energy, ofvariation life processes like growth, movement reproduction etc, for life process oxidation-reduction reaction are the direct atom source of energy. Redoxreaction involve exvhange of electronesbetween atoms. The loss of electrons is called oxidation while the gain of electrons is called reduction elelctrons can be energy source. It depend upon their location and arrangement in atoms for Example: When they are present it oxygen they make stable association with oxygen atoms and are not good energy source. But it electrons are drogged away from oxygen and attached to some other atoms. In living organisms redox reductin involve the loss and gain of hydrogen atos. we know that a hydrogen atoms contains are proton and one electron. It means that when a molecule loses a hydrogen atoms.It actualy loses an electron and similarly when a molecule gains hydrogen atoms . It actually gains on electrons.
Explain limiting Factor in photosynthesis?
Any enviromental factor the absence or deficiency of which can decrease the rate of metabolic reaction is called limiting factor for that reaction. Many factor like light intensity,temperature,concentration of carbon dioxide and availability of water act as limiting factor for synthesis
Effect of light intensity and temperature.
The rete of photosynthesis veiwes with light intensity. It decrease as light intensity decrease and increase as intensity decreas and increase as intensity increase.However at much higher light intensity.the rate of photosynthsis becomes constent.
The rate of photosynthesis decrese with decrease in temperatura. It increase as tempertura is increase over a limited randge but if light intensity is law .
Effect of carbon dioxide concentration:
As carbon dioxide concentration rises the rate of photosynthesis goes on increasing until limited by other. factor. increase in carbon dioxide concentration beyond a certain level causes the closure of stomata and it decrease the rate of photosynthesis.