Chapter 25 Slides Sections 1-3
Chapter 25 Slides Sections 1-3 Chapter 25 Slides Sections 1-3
Millions of years ago ARCHEAN PROTEROZOIC PRECAMBRIAN 0 500 1000 Cenozoic Mesozoic Paleozoic Colonization of land by animals Appearance of animals and land plants First multicellular organisms Bacteria Archaebacteria Protista Plantae Fungi Animalia 1500 Oldest definite fossils of eukaryotes 2000 2500 3000 3500 4000 4500 AP Biology Appearance of oxygen in atmosphere Oldest definite fossils of prokaryotes Molten-hot surface of earth becomes cooler Formation of earth The evolutionary tree of life can be documented with evidence. The Origin of Life on Earth is another story…
Concept 25.1: Conditions on early Earth made the origin of life possible • Chemical and physical processes on early Earth may have produced very simple cells through a sequence of stages: 1. Abiotic synthesis of small organic molecules 2. Joining of these small molecules into macromolecules 3. Packaging of molecules into protocells 4. Origin of self-replicating molecules AP Biology © 2011 Pearson Education, Inc.
- Page 1: “…sparked by just the right com
- Page 5 and 6: • In the 1920s, A. I. Oparin and
- 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
Millions of years ago<br />
ARCHEAN<br />
PROTEROZOIC<br />
PRECAMBRIAN<br />
0<br />
500<br />
1000<br />
Cenozoic<br />
Mesozoic<br />
Paleozoic<br />
Colonization of land<br />
by animals<br />
Appearance of animals<br />
and land plants<br />
First multicellular<br />
organisms<br />
Bacteria Archaebacteria<br />
Protista Plantae<br />
Fungi<br />
Animalia<br />
1500<br />
Oldest definite fossils<br />
of eukaryotes<br />
2000<br />
<strong>25</strong>00<br />
3000<br />
3500<br />
4000<br />
4500<br />
AP Biology<br />
Appearance of oxygen<br />
in atmosphere<br />
Oldest definite fossils<br />
of prokaryotes<br />
Molten-hot surface of<br />
earth becomes cooler<br />
Formation of earth<br />
The evolutionary tree of<br />
life can be documented<br />
with evidence.<br />
The Origin of Life on<br />
Earth is another story…
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