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Energy - capacity or ability to perform work - joules, calories

Energy. Energy - capacity or ability to perform work - joules, calories Work - application of a force through a distance - joules, calories, Kg*m Biological work - transport, mechanical and chemical work Power - amount work performed over a specific time (workrate) - Joules/s; kg*m *min -1

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Energy - capacity or ability to perform work - joules, calories

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  1. Energy • Energy - capacity or ability to perform work - joules, calories • Work - application of a force through a distance - joules, calories, Kg*m • Biological work - transport, mechanical and chemical work • Power - amount work performed over a specific time (workrate) - Joules/s; kg*m *min-1 • Transformation of energy - forms of energy can be converted from one form to another • chemical energy in food is transformed into mechanical energy of movement or other biological work • Biological energy cycle • Turnover - the energy in the bonds between molecules are constantly used and restored. Turnover refers to rate of renewal (eg ATP from ADP). In a steady state the rate of renewal is equal to rate of use.

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