1. Life’s Beginnings on Earth according to science
AP Biology
Life’s Beginnings on Earth according to science

2. Nucleic Acid Formation

3. Amino Acid Formation

4. Protein’s Natural Form

5. Monosaccharides Combining

6. Phospholipid Formation

7. Construction of mRNA from DNA

8. Constructing Chromosomes

9. DNA Replicating

10. -
Membrane Formation
WATER
Hydrophilic
head
Hydrophobic
tail
WATER

11. Representation of a Protobionts

12. Stanley Miller

13. LE 26-2
CH4
Water vapor
Electrode
NH3 H2
Condenser
Cold
water
Cooled water
containing
organic
molecules
H2O
Sample for
chemical analysis

14. Early Earth

15. Energy Source