Cell Energy
Types of Energy
● Electrical
● Nuclear
● Solar
● Mechanical
● Thermal
● Chemical
● Cellular energy is CHEMICAL ENERGY
● Chemical energy is stored in the BONDS that hold
atoms together
What type of Organic Macromolecule
Provides Short Term Energy?
● carbohydrates
Your cells do NOT use carbs
directly for cell activities
● Cellular activities include
things like
●
●
●
●
Muscle contraction
Moving things in a cell
Cell division/reproduction
Growing
● What type of energy is
used DIRECTLY?
● ATP = adenosine
triphosphate
Cellular Energy in ATP
● Carbohydrates provide short term energy, but ATP is
immediate energy
● Where is the energy in ATP stored?
● In the bond that holds the third phosphate on
● How does the energy get released for a cell to use?
● Break the bond and release the third phosphate
● What molecule is left when ATP loses a phosphate?
● ADP
● Which has more energy (bonds) ATP or ADP?
● ATP-it has more bonds
Making ATP
● If a cell continually uses energy in the form of ATP,
how does it make more to replace what it has lost?
● From the food you eat
● What is the name of the process in which food
(usually carbohydrates) is used to regenerate ATP
from ADP?
● Cellular Respiration
● What types of organisms use ATP as energy?
● ALL LIVING ORGANISMS!
SUMMARY OF CELL ENERGY
● The energy stored in the bonds of ATP provides
energy for living organisms to do things like grow,
move and remove wastes.
● The energy is released from ATP when the bond
holding the third phosphate is broken, forming ADP.
● The energy is stored/regenerated when food is used
to add that phosphate back on again and regenerate
ATP from ADP.
ATP/ADP Cycle