CELLULAR RESPIRATION
ENERGY
• Energy is the ability to do work
– Cars running on fuel  Chemical Energy
– Computers and light bulbs  Electrical Energy
• Living organisms depend on energy, too.
• Sometimes, it is easy to see when we need energy
• Other times, it is not that obvious
• All organisms obtain
energy in different ways
BIOMOLECULES
• Lipids
• Proteins
• Nucleic Acids
• Carbohydrates
CARBOHYDRATES
• Provide quick burst of ENERGY
• Polymer
– Long chain of sugar
• Monomer
– Monosaccharide
– Sugar
– Glucose
WHAT IS CELLULAR RESPIRATION?
• Cellular Respiration is the process where sugars
(glucose) are converted into usable energy ATP
(Adenosine triphosphate).
• Glucose is the fuel for Cellular Respiration
• Cell Respiration happens in the Mitochondrion
Remember – Chloroplasts are found only in plant cells. Mitochondria
are found in both plant and animal cells.
Plant
Cells
Animal
Cells
REACTANTS FOR CELLULAR RESPIRATION
• Cellular Respiration needs:
– Oxygen
– Fuel/Energy Source
• Carbohydrates
• Sugars/Glucose
PRODUCTS OF CELLULAR RESPIRATION
• Cellular Respiration will produce:
– Water
– Carbon Dioxide
– Energy/ATP
WHAT IS ATP?
• ATP is a molecule that provides the energy (POWer)
to a cell.
TED-Ed - Photosynthesis & Food (ATP)
BNSG - ATP
GENERAL CHEMICAL REACTION
C6H12O6 +
Glucose
(Sugar)
6O2
+ Oxygen
+ 6H20 + ATP
+ Water + Cellular
Energy
Waste
Products
PHOTOSYNTHESIS AND CELLULAR RESPIRATION
+ 6H20
Sunlight
+ Water Sunlight
C6H12O6 + 6O2
Glucose + Oxygen
(Sugar)
C6H12O6 +
6O2
Glucose + Oxygen
(Sugar)
+ 6H20 +
ATP
+ Water + Cellular
Energy
ANALOGY
• A car needs fuel to move
– Gasoline provides that energy
• A cell needs ATP to function
– ATP is the energy