What is Bioenergetics in Biology

Bioenergetics in Biology


Definition of Bioenergetics


The capturing and conversion of energy from one form to another in the living system and its utilization in metabolic activities is called Bioenergetics. Bio-energetics is the quantitative study of energy relationships and conversion into biological system. Biological energy transformation always obey the laws of thernodynamic.


Role of ATP As Energy Currency


ATP is adenosine triphosphate. Adenosine is made of adenosine and ribose sugar. Among the three phosphate groups two are energy rich Po4 bonds. So ATP is a high energy compound it gives its Po4 groups easily. When 1 ATP is converted into ADP, 7.3 K cal/mole or 31.81 KJ/mole energy is released. ATP -> ADP + Pi + Energy Living organisms use organic food for generation of energy. These food usually contain carbohydrates which degrade to produce 002, H20 and energy. Which is usually in the form of ATPs. ATP plays role in several endergonic and exergonic reactions.



Endergonic Reactions


Those chemical reactions which accompanied by the absorption of the energy are known as endergonic reactions. The products have a higher free energy than reactants.


Examples of endergonic reaction in human are


  1. Synthesis of proteins
  2. Synthesis of lipids
  3. Synthesis of cholestrol
  4. Synthesis of glycogen


Exergonic Reactions


Those reactions which complete along with the liberation of free energy are known as Exergonic reaction. The products have a lower free energy than the reactants.



An aerobic glycolysis, Kreb’s cycle, oxidative phosphoylation.



Substances in plants that absorb the visible light are called Pigments. Different pigments absorb light of different wavelength. They are involved in the conversion of light energy to chemical energy. Important plant pigments are chlorophyls, carotenoids, phycobilin, xanthophylls, phaelophytin.



Each photosystem is a highly organized unit consisting of chlorophyll accessory pigment molecules and electron carrier molecules present on the thylakoids of chloroplast. Each thylakoid contains many units of two photosystems the photosystem land photosystem II. So chloroplast contains thousands of photosystem.

Note: You can go to school anywhere in the world, for this the listener needs only a computer with Internet access. The learning process becomes more accessible and the organization becomes much easier than the classical classroom training. In the city where your branch is located, there may not be courses necessary to improve the qualifications of your employees, and if there are more than one such branch, two or more? Why call employees for training in other cities thereby tearing them away from production, not to mention the costs, if it is possible to organize distance learning for all specialists of your organization on the Internet in real time. Mobility – the effective implementation of feedback between the listener and the teacher is perhaps one of the basic requirements and grounds for the positivity of the learning process. The listener can communicate with the instructor or with other students in the forum, in a chat room, or participate in a web conference in real time.

Spread Knowledge

Get More Stuff Like This IN YOUR INBOX

Subscribe to our Mailing List and get interesting Stuff and updates to your Inbox

Click Here to Leave a Comment Below 0 comments

Leave a Reply: