Chapter 8 Photosynthesis 8.1 Energy and Life 10/27/2005

Chapter 8 Photosynthesis

8.1 Energy and Life 10/27/2005

What is Energy? Ability to do work

Autotrophs vs. Heterotrophs

Makes their own food

Use the energy of the sun

Ex. Plants

Obtains energy from the foods they consume

ATP

Adenosine TriPhosphate Made up of:

Adenine 5 Carbon sugar (ribose) Three phosphate groups

KEY TO STORE & RELEASE ENERGY

Storing Energy

ADP (Adenosine DiPhosphate) Similar to ATP 2 phosphate groups Key to the way in which living things store energy Add on available energy with a phosphate to ADP to create ATP Analogy --> Battery

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