1. 9D Urey Miller Experiment and 7G Cell Complexity

2. Review: What are the four biomolecules?

3. Organic Molecules Molecules that contain bonds between carbon atoms.
Significant because many of them are IMPORTANT to LIVING things
Examples: Nucleic acids, ATP, amino acids, proteins

4. Chain of Events that Led to Life
Formation of simple molecules
Joining of simple molecules to make complex molecules
Self-replicating molecules (RNA that replicates by itself)
Metabolic processes (LIFE!)

5. Urey Miller Experiment
Proposed that simple organic molecules could form in the conditions of early Earth. Accumulated in the ocean as “soup” Formed complex organic molecules from the simple ones Over time, cells (that live in no oxygen) anaerobic heterotrophs developed from these conditions

6. Urey Miller Experiment

7. Checkpoint
What was the overall goal of the Urey Miller experiment? To show that _______________ molecules could be formed from the smaller INORGANIC conditions of the _________________.

8. 7G Cell Complexity Now that we have the first cells…
How do we get complicated organelles?

9. Earth’s atmosphere
The first cells lived when Earth’s atmosphere lacked oxygen. (NO OXYGEN!)
Over time, cellular processes such as photosynthesis and cellular respiration developed that INTRODUCED Oxygen to the atmosphere.

10. Endosymbiotic Theory
Anaerobic Bacteria (lives without oxygen) engulfs an aerobic heterotrophic bacteria (lives in oxygen that can make ATP)
The bacteria becomes a mitochondria  makes ATP for the cell.

11. Endosymbiotic Theory
The bacteria with the mitochondria engulfs a photosynthetic bacteria.
The photosynthetic bacteria becomes the chloroplast  uses sunlight to make SUGAR for the cell.