the maintenance of a stable internal environment
Units of heat that measure the energy available in foods
adding or losing energy through gaining mass or losing mass
adding or losing energy through conduction,radiation or convection
adding or losing energy through light or sound
adding or losing energy by a force applied in a direction of motion
no energy enters or leaves the system
E total= E kinetic + E potenital
Law of Conservation of Energy
energy cannot be created nor destroyed
sum of all kinetic and potential energy contained by the article (atoms, molecules etc) in a system
internal kinetic energy
energy stored by the movement of particles (atoms, molecules etc) in a substance. Measured by the temperature of a substance.
internal potential energy
energy stored due to the position of the atoms in a substance; chemical energy of a substance
energy rich organic compounds made up of the elements carbon, hydrogen and oxygen ex. sugars, starches, grains
energy-rich organic compounds, such as fats, oils, and waxes, that are made of carbon, hydrogen, and oxygen
large molecules that contain nitrogen as well as carbon, hydrogen, and oxygen; needed by tissue for repair and growth. made up of 20 amino acids.
complex macromolecules that store and transmit genetic information
referring to or derived from living organisms. In chemistry, any compound containing carbon.
small molecular unit that is the building block of a larger molecule
large molecule formed when many smaller molecules bond together