Energy and Life

1. Energy and Life • Ch 8-1

2. Energy and Life • Energy is the ability to do work • All living things require energy just like our household appliances need energy to function

3. Autotrophic vs heterotrophic • When talking about the energy of life we can break all of life up into two categories • Autotrophs • Heterotrophs

4. Autotrophic vs heterotrophic • Autotrophs are any living organisms that have the ability to make their own food • Plants are an example of autotrophs because they make their own food through photosynthesis

5. Autotrophic vs heterotrophic • Heterotrophs are any organism that must consume food in order to obtain energy because they can not make it themselves • Animals are all heterotrophic

6. Chemical Energy • Energy can come in many forms • Energy can also be stored in chemical compounds • Example: Carbon and Hydrogen in a candle combine with Oxygen in the air to produce water and Carbon Dioxide

7. Chemical Energy • We will look at chemical energy with three compounds • AMP -- Adenosine Monophosphate • ADP -- Adenosine Diphosphate • ATP -- Adenosine Triphosphate

8. AMP • AMP is Adenosine Monophosphate • AMP is made up of Adenine, Ribose and a Phosphate group that only has 1 Phosphate molecule • AMP will store the least amount of energy of our chemicals

9. ADP • ADP is Adenosine Diphosphate • ADP is made up of Adenine, Ribose and a Phosphate group that only has 2 Phosphate molecules • ADP will store more energy than AMP but we will still need to store even more energy

10. ATP • ATP is Adenosine Triphosphate • ATP is made up of Adenine, Ribose and a Phosphate group that only has 3 Phosphate molecules • ATP will store the most amount of energy, like a fully charged battery

11. Glucose • Even though ATP store alot of energy, this energy only lasts for a few seconds • Cells need to store energy for the long term as well • They do this by storing energy in carbohydrates like glucose