Why do living things release energy?

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    • #8282
      Mike the Venerable
      Participant

      I know living things need a constant supply of energy, and today I learned that living things give off energy in most of their chemical reactions. Why do living things do this since we need it?

    • #76305
      mith
      Participant

      growth

    • #76317
      sara sabir
      Participant

      energy is used to do work

    • #76318
      wbla3335
      Participant

      Also waste. Nothing is 100 percent efficient.

    • #76321
      MrMistery
      Participant

      well we do need the energy. we need it for something. and we put it to use to do that something, we have to convert that chemical potential energy into mechanical energy etc. Also, every chemical reaction will give off some energy as heat, as no reaction is 100% efficient. actually, the efficiency of cellular respiration is only 38%. that is waay better than your car, which converts only 15% of the energy of the gasoline into movement of the wheels.

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