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Cell Biology > Thermodynamics > Topic 2: Energy Conversion

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Several types of energy conversion occur in cells. Respiration is the process by which raw fuel energy is converted to a form that can be used for cellular work. Cellular work is a set of processes that includes routine housekeeping as well as special functions such as mitosis. All cells respire and do work. Photosynthesis is carried out by the cells of green plants and algae, among others. It is the conversion that provides food energy, directly or indirectly, for every living organism on earth.


Your task is to look at cellular energy conversions in terms of energy input and energy output. How might these conversions transfer energy amongst themselves?

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