Chapter 25 Slides Sections 1-3
Chapter 25 Slides Sections 1-3 Chapter 25 Slides Sections 1-3
AP Biology Synthesis of Organic Compounds on Early Earth • Earth formed about 4.6 billion years ago, along with the rest of the solar system • Bombardment of Earth by rocks and ice likely vaporized water and prevented seas from forming before 4.2 to 3.9 billion years ago • Earth’s early atmosphere likely contained water vapor and chemicals released by volcanic eruptions (nitrogen, nitrogen oxides, carbon dioxide, methane, ammonia, hydrogen, hydrogen sulfide) © 2011 Pearson Education, Inc.
• In the 1920s, A. I. Oparin and J. B. S. Haldane hypothesized that the early atmosphere was a reducing environment • In 1953, Stanley Miller and Harold Urey conducted lab experiments that showed that the abiotic synthesis of organic molecules in a reducing atmosphere is possible AP Biology © 2011 Pearson Education, Inc.
- Page 1 and 2: “…sparked by just the right com
- Page 3: Concept 25.1: Conditions on early E
- Page 7 and 8: Conditions on early Earth AP Biolog
- Page 9 and 10: Stanley Miller University of Chicag
- Page 11 and 12: Abiotic Synthesis of Macromolecules
- Page 13 and 14: • Adding clay can increase the ra
- Page 15 and 16: Self-Replicating RNA and the Dawn o
- Page 17 and 18: The Fossil Record • Sedimentary r
- Page 19 and 20: • Few individuals have fossilized
- Page 21 and 22: Fraction of parent isotope remainin
- Page 23 and 24: Concept 25.3: Key events in life’
- Page 25 and 26: Table 25.1 AP Biology
- Page 27 and 28: Table 25.1b AP Biology
- Page 29 and 30: Figure 25.7-3 Cenozoic Humans Colon
- Page 31 and 32: Figure 25.UN03 1 4 2 3 AP Biology A
- Page 33 and 34: • By about 2.7 billion years ago,
- Page 35 and 36: Figure 25.UN04 1 4 AP Biology Singl
- Page 37 and 38: First Eukaryotes • Development of
- Page 39 and 40: 2 nd Endosymbiosis • Evolution of
- Page 41 and 42: Figure 25.UN05 1 4 2 3 AP Biology M
- Page 43 and 44: Figure 25.UN06 Animals 1 4 2 3 AP B
- Page 45 and 46: AP Biology
- Page 47 and 48: Figure 25.10 Sponges Cnidarians Ech
- Page 49 and 50: The Colonization of Land • Fungi,
- Page 51: Is there life elsewhere? Does it lo
• In the 1920s, A. I. Oparin and J. B. S. Haldane<br />
hypothesized that the early atmosphere was a<br />
reducing environment<br />
• In 1953, Stanley Miller and Harold Urey<br />
conducted lab experiments that showed that<br />
the abiotic synthesis of organic molecules in a<br />
reducing atmosphere is possible<br />
AP Biology<br />
© 2011 Pearson Education, Inc.
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