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Organisms obtaining food
Autotroph: An organism that makes it’s own food Ex. Plants, Algae
Heterotroph: An organism that obtains food by eating autotrophs. Ex. Human, Cow
Energy
Kinetic
Energy of motion
Thermal Energy Random
Molecular Motion
Potential
Stored Energy
Chemical Energy Atoms
arranged to store energy
Cellular Respiration
Input Sugar + Oxygen
Cellular Respiration Creates Heat and
ATP
Output CO2 + H2O
Input Gasoline +
Oxygen
Combustion Creates Heat
and movement
Output CO2 + H2O
Combustion
Cellular Respiration A chemical process that uses
oxygen to convert the energy in organic molecules into ATP
ATP = Adenosine Triphosphate
ATP = Energy “currency” for cell
ATP provides energy for the cell to do three types of work: Chemical work = building large molecules Mechanical work = muscle contraction Transport work = getting ions across cell
membrane
Respiration Aerobic: A process that requires oxygen
Cellular respiration vs. breathing Both Bring in Oxygen and release Co2
Cellular Respiration
Input: Glucose (C6H12O6) + Oxygen (O2)
Output: Carbon Dioxide (CO2) + Water (H2O) + 38 ATP
Lactic Acid Fermentation The process used to make ATP without
oxygen
Anaerobic= A process that does not require oxygen
ATP is made from just the process of glycolysis
Creates 2 ATP and Lactic Acid
Alcoholic Fermentation Organisms such as yeast can
ferment sugar and other foods but they create ethyl alcohol instead of Lactic Acid
Alcoholic Fermentation also releases CO2 which allows for the rising of bread or carbonation of beverages
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