Study Online and Download KIPS 9th Class Biology Notes Unit 7: Bioenergetics.
Study Online and Download KIPS 9th Class Biology Notes Unit 7: Bioenergetics. Chapter 4 described the structure of cell and chapter 6 mentioned the role of enzymes in cellular functions. A living cell exhibits ceaseless chemical activities.
We studied that cells are like “open systems” i.e. substances are entering and leaving the cell all the times. Inside cells, substances are broken down and new substances are formed. Energy drives all these processes in a cell. In living organisms, energy exists in two forms: kinetic energy is actively involved in doing work, and potential energy is stored for future use. Potential energy is stored in chemical bonds and is released as kinetic energy when these bonds break.
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