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What is Cellular Respiration?
Cellular Respiration Overview
• Transformation of chemical energy in food into ATP (chemical energy cells can use)
• These reactions proceed the same way in plants and animals. Process is called cellular respiration
• It happens in the mitochondria
Glucose+ Oxygen Carbon Dioxide + Water + EnergyEnergy
The equation=
Overall Reaction:C6H12O6 + O2 → CO2 + H2O
CELLULAR RESPIRATION EQUATION: C6H12O6 + O2 CO2 + H2O + Energy
PHOTOSYNTHESIS EQUATION: CO2 + H2O + LIGHT C6H12O6 + O2
3 Steps
• There are three steps in the process of cellular respiration: –1. Glycolysis–2. Krebs Cycle (Citric Acid Cycle)–3. Electron transport chain.
•GGet et KKrunk runk EEveryoneveryone
• All 3 steps produce ATP. The electron transport chain produces the most!
Types of Cellular Respiration: Aerobic vs. Anaerobic
• Aerobic- oxygen required• Anaerobic- no oxygen required– If oxygen is not present, products such
as ethanol and CO2 (single cell fungi (yeast) in beer/bread) or lactic acid (muscle cells) are produced.
– Some organisms thrive in environments with little or no oxygen
– Marshes, bogs, gut of animals, sewage treatment ponds
Photosynthesis vs. Cellular Respiration.
AND Animals vs. Plants
Cellular Processes
Products of Cellular Processes
Equations of Cellular Processes
C6H12O6 + O2 CO2 + H2O + Energy
CO2 + H2O + LIGHT C6H12O6 + O2
Steps in the process
Where it takes place
Energy
Nutrient Absorption
Hormone Response• Phototropism
Gas Exchange• Stoma- opening in the
underside of a leaf that allows carbon dioxide and oxygen to diffuse into and out of the leaf
• Guard cell- specialized cell in the epidermis of plants that controls the opening and closing of stomata by responding to changes in water pressure
How it gets food
• I can make my own food= A______.
• I cannot make my own food=H____.
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