9.1 Enery and Life

• Energy forms: Light, heat, electricity, and food

• All living cells store energy in chemical bonds and other compounds

ATP- Adenosine Triphosphate

• 5 carbon sugar called Ribose

• 3 phosphate groups 

• Adenine 

ATP is used for: active transport, enabling cells to move, protein synthesis, responding to chemical signals, and converting light

ATP IS NOT good for storing long-term energy

• Cells keep a small supply of ATP on hand

Glucose is used to store long-term energy

What characteristic makes ATP a useful basic energy source for all cells? 

ATP can release and store energy by breaking and re-forming the bond between its phosphate groups. 

ADP- Adenosine Diphosphate

• 5 carbon sugar called Ribose

• 2 phosphate groups 

• Adenine 

ADP is created when the chemical bonds between the second and third phosphate groups in ATP are broken

Heterotrophs (animals) get food- eating.

Plants, some algae, and some bacteria get food- photosynthesis.

Mushrooms and other decomposers get food- absorbing nutrients from decomposing organisms.