BIOL 1001 Chapter : Chapter 6 Energy Flow And Cells
Document Summary
Chapter 6- energy in the life of a cell. Less than 1% of the solar energy reaching the earth is captured by photosynthesis cells. This captured energy is converted into the energy that drives almost all the processes of life: matter and energy: Matter is anything that takes up space and has mass. Work is the transfer of energy to an object. Energy transfer by organisms is subject to two laws of thermodynamics: first law of thermodynamics states that energy can be transferred and transformed, but it cannot be created or destroyed (i. e. , the energy of the universe is constant). -- often called the law of conservation of energy: second law of thermodynamics states that every energy transfer or transformation makes the universe more disordered (i. e. , every process increases entropy at the cost of useful energy) Energy conversions (transfers) happen at the cost of useful energy (fig. Energy is constantly flowing in from the sun.