Tag: active transport and passive transport

Cellular respiration requires oxidation of organic substrates for the liberation of energy. The energy released is stored in every living cell in the form of a universal high energy molecule called ATP or adenosine triphosphate.

Adenosine triphosphate is the long form of ATP, it is the complex organic chemical that participates in many processes. Found in all forms of life, ATP is often referred to as the "molecular unit of currency" of intracellular energy transfer.

The hydrolysis of ATP to ADP releases approximately 7.3 kcal/mol, which is equivalent to about 7,300 calories. Among the choices, 12,000 calories is the standard approximation used in many textbooks for this biological process.

The common immediate source of energy in cellular activity is ATP molecule. It is also called as energy currency of the cell. ATP molecules are formed as a result of phosphorylation. It is used in various cellular processes for providing energy.

Commercial energy is obtained to the users at some price and is used mostly for commercial purposes. It is a non-renewable form of energy. Where as, non-commercial energy is a renewable form, obtained from cow dung, fire wood and agricultural waste.