11/19/14 Objective: How do organisms obtain energy and what are the different kinds of energy? Do Now: What is the difference between an autotroph and a heterotroph?

Cellular Respiration The process in which cells use oxygen to convert glucose into ATP (energy) Occurs in the mitochondria

What is Cellular Respiration? ATP CO 2 H2OH2O O2O2 Glucose In Cellular Respiration, Glucose and Oxygen ENTER the organelle, Water and Carbon Dioxide are released as waste

Types of Energy Kinetic: energy of motion Potential: Stored energy Chemical: a form of potential energy due to chemical structure (found in organic compounds)

ATP ATP: adenosine triphosphate - An energy storing molecule –Adenosine = adenine + ribose –Triphosphate = 3 phosphates One phosphate is lost in a chemical reaction –ATP --> ADP (Adenosine Diphosphate)

Describe what is occurring from 1 to 2: 1 2

Describe what is occurring from 2 to 3: 2 3

Work chemical work: building large molecules –Ex. Proteins mechanical work: contraction of muscle transport work: pumping solutes (ions) across a cellular membrane

How is ATP like a battery? Which battery represents ATP? ADP? ATP ADP

ATP Cycle ATP is continuously converted to ADP –Muscle cell recycles all ATP once a minute –10 million spent and regenerated per second

Help with the Terms ATP, ADP: What are they? Cells- Use ATP as their source of energy Molecule: ATP and ADP are types of molecules Carbohydrates: Cells can regenerate ATP from ADP as needed by using the energty in carbohydrates like glucose Muscles: Need ATP to contract Energy: Created from ATP and needed for life processes Living things: Need ATP for growth, reproduction, movement, etc Life Processes: Movement, Reproduction, Growth which requires ATP