1. What is Energy?
Glucose

2. What is Energy? Some definitions: ability to rearrange
Molecules in chemical reactions
ability to do work

3. Major Types of Energy chemical Kinetic = motion mechanical
What types of energy are used by living things?
Potential = stored
chemical
Kinetic = motion
mechanical
Glucose

4. Forms of chemical energy
Glucose
Different forms of stored chemical energy are used in living things

5. Flow of energy- From Chemical to Kinetic Energy

6. Energy Transformation
reactants > products
Is running an energy gain or release?
How about digestion?
How is ATP used in the cell?

7. What is ATP? Energy “Currency”
used by cells- Take a second to draw the outlines and label this molecule

8. So where is all the energy stored??
The energy that ATP provides is a result of its 3rd phosphate bond
This is potential energy.
Each time the ATP molecule loses its third phosphate bond all of that potential energy is given off to be used in doing work
Recap question: what are some examples of work on cellular level? Other examples?

9. ATP - ADP Cycle ATP is used as energy and its byproduct is ADP
ADP is brought to ATP Synthase (what type of protein is this?) which adds a Phosphate group forming ATP again

10. So what do we use ATP for? Some important examples:
Synthesis of complex molecules (proteins, cholesterols, pigments…etc)
Sending of nerve signals between neurons ( imagine a stack of domino’s…each signal sent is like flicking them over…setting up requires energy.
Contraction of muscle fibers. (flex your bicep…you just used ATP to do that)

11. Practice Question:
Using the analogy of a battery, what is the relationship between ATP and ADP?
Please get into your lab groups and answer this question on the whiteboards.

12. For Next Class: Photosynthesis: Some details
Sunlight
Some details:
Light
Reaction
Oxygen
Water
ATP
NADH
Dark Reaction
Carbon Dioxide
Glucose