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Intro to Bio- Chpt 1 Cheat Sheet (DRAFT) by

Biological science- Freeman

This is a draft cheat sheet. It is a work in progress and is not finished yet.

5 Charac­ter­istics of Living Organisms

- Cells
basic unit of life
- Replic­ation
- Evolution
organisms are the product of evolution
- Inform­ation
organisms process heredity info encoded in genes. They also respond to info from enviro­nment and adjust to maintain internal condit­ions.
- Energy
organisms have to aquire and use energy to survive and reproduce
 

Louis Pasteur

Performed experiment that supported cell theory.
Two flasks- both with nutrient rich broth that was boiled (paste­urized) where one was in a swan neck flask and one in a flask with open end. The flask with the swan neck trapped preexi­sting cells from the air from entering the flask whereas the open ended flask allowed cells from the air to enter. The swan neck flask never grew any cells and the open flask grew many. The sponta­neous generation hypothesis predicted that both flasks would produce cells and cell theory predicted that only the flask that had pre-ex­isting cells from the air would produce more cells. Cell theory was theorized.