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Energy = Life Life = Energy

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Presentation on theme: "Energy = Life Life = Energy"— Presentation transcript:

1 Energy = Life Life = Energy

2 What is the ultimate source of energy on Earth?
The Sun

3 What is the difference between Autotrophs and Heterotrophs?
“self feeder” make food from inorganic molecules producers Heterotrophs “other eaters” get food by eating other organisms consumers

4 How do they obtain their energy?
Autotrophs Photosynthesis- uses Sun’s energy to convert water and carbon dioxide into glucose. Autotrophs and Heterotrophs Cellular Respiration- use oxygen to convert glucose into ATP.

5 How does photosynthesis and respiration relate to one another?

6 What is energy? the ability to perform work
Potential energy: energy that is stored; It may be converted to other types of energy. Kinetic Energy: energy of motion. Thermal Energy

7 How is chemical energy a type of potential energy?
A molecule can store energy between atoms. When atoms are released, energy is released.

8 How do we obtain energy from food?
Organic molecules have structures that give them lots of chemical energy in the form of ATP.

9 An analogy of respiration

10 How do cells convert chemical energy into usable energy?
Chemical energy stored in organic molecules is converted to energy stored in a molecule called “ATP” ATP = Adenosine Triphosphate I use ATP to move my muscles!

11 What is the structure of ATP?
1 Adenosine molecule 1 Ribose molecule = 1 ATP 3 Phosphate molecules

12 How does ATP drive cellular work?
When a phosphate bond of an ATP molecule is broken, energy is released. The phosphate attaches to another molecule.

13 ATP  ADP  ATP ADP ATP ADP
What is the ATP Cycle? ATP  ADP  ATP ADP ATP ADP


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