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Chapter 8 - Photosynthesis

Chapter 8 - Photosynthesis. 8.1 Energy and Life 8.2 Photosynthesis: An Overview. 8.1 Energy and Life. Energy – the ability to do work Adenosine Triphosphate – ATP Molecule that stores and releases energy Consists of adenine, ribose (sugar), and 3 phosphate groups. ADP.

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Chapter 8 - Photosynthesis

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  1. Chapter 8 - Photosynthesis 8.1 Energy and Life 8.2 Photosynthesis: An Overview

  2. 8.1 Energy and Life • Energy – the ability to do work • Adenosine Triphosphate – ATP • Molecule that stores and releases energy • Consists of adenine, ribose (sugar), and 3 phosphate groups

  3. ADP • Adenosine Diphosphate • Has 2 phosphates instead of 3 • Cycles with ATP to store and release energy • Adenosine + Ribose + Phosphate + Phosphate

  4. Releasing Energy • In order to release energy: • The bonds in ATP between the 2nd and 3rd phosphate groups break = energy is released • ATP has now been changed into ADP and a separate phosphate

  5. Heterotrophs • Organisms that obtain energy by consuming other organisms

  6. Autotrophs • Organisms that obtain energy by making their own food

  7. Photosynthesis • Autotrophs make their own food by photosynthesis • Converting energy of sunlight into chemical energy stored in the bonds of carbohydrates • Photo- “light” • -synthesis “to put together, to make” • Next section = how photosynthesis works!

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