Bio 1013 BRCC
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, energy The capacity to do work. Cellular work includes processes such as building
complex molecules and moving substances into and out of the cell.
biofuels renewable fuels made from living organisms
fossil fuels Carbon-rich energy sources, such as petroleum, natural gas, and coal, which are
formed from the compressed, fossilized remains of once-living organisms.
chemical energy potential energy stored in the chemical bonds that hold chemical compounds
together
conservation of energy The principle that energy cannot be created or destroyed, but can be
transformed from one form to another.
potential energy stored energy
kinetic energy energy due to motion
heat The kinetic energy generated by random movements of molecules or atoms.
Photosynthesis The process by which plants and algae harness the energy of sunlight to make
sugar from carbon dioxide and water.
autotrophs Organisms such as plants, algae, and certain bacteria that can make their own
food from inorganic starting materials (e.g., CO2).
heterotrophs Organisms, such as humans and other animals, that obtain energy by consuming
organic molecules that were produced by other organisms.
Chloroplast The organelle in plant and algae cells where photosynthesis occurs.
light energy a type of electromagnetic radiation that includes visible light
photons Packets of light energy, each with a specific wavelength and quantity of energy.
chlorophyll The pigment present in the green parts of plants that absorbs photons of light
energy during the "photo" reactions of photosynthesis.
Adenosine Triphosphate (ATP) The molecule in cells that powers energy-requiring functions.