AGRI 1005 Chapter : Genetics2012pt1
Document Summary
Energy flow in the life of a cell. --matter is anything that takes up space and has mass. --potential energy is energy stored in matter because of its position or location. Potential energy in biological systems can be stored in chemical bonds: potential energy, kinetic energy. >>>the laws of thermodynamics describe the properties of energy. Energy transfer by organisms is subject to two laws of thermodynamics. --first law of thermodynamics which states that energy can be transferred and transformed, but it cannot be created or destroyed (i. e. , the energy of the universe is constant). --second law of thermodynamics which 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 is constantly flowing in from the sun. The universe is a closed system and the solar system is almost a closed system. All other closed systems are created in the lab.
