How did life begin on Earth, and what changes have occurred in the past that have allowed the organisms alive today to evolve to their present forms? This PowerPoint presentation covers the pieces of this very large puzzle and examines the evidence that is available to us.
This PowerPoint and accompanying notes is for a high school Biology class. One of the most fascinating topics in biology concerns the origin of life. The fossil record contains many clues to this great mystery and gives us glimpses of many strange and bizarre creatures that used to inhabit the oceans and landmasses on Earth. It is clear that many of these creatures have relatives that still live today, while others have disappeared completely.
What is included in this product?
• A 92 Slide PowerPoint (Colorful and visually appealing!)
• 12 Page set of lecture notes for the teacher.
• 16 Page guided notes outline for the student.
• 2-Page Teacher Guide
It has been my experience that teaching this unit first, followed by units on evolution, classification and taxonomy, provides the high school biology student with a solid foundation in understanding life on Earth and the changes that have occurred in the past that have led us to the life forms we see today.
The Power Point is designed to hold the attention of your students. The 92 slides are bright and colorful and contain many, many visually appealing pictures and images. Graphics, diagrams, clip art, and photographs were chosen to capture the attention of the student as the lesson is being taught. Animations and transitions are included to allow you to control the pace of the lesson. This product also includes a set of notes for the teacher (12 pages) and a guided outline of the notes for the student (16 pages).
Your students are going to love using the outline as you teach. It allows the student more freedom to listen, think, and ask questions during note-taking. The notes are also perfect for students with disabilities or IEP's.
Topics covered by this lesson:
• Early Ideas About the Origin of Life: Biogenesis, spontaneous generation, abiogenesis, the experiments of Redi, Spallanzani, and Louis Pasteur.
• Earth’s History: The age of the Earth, radioactive dating, isotopes, radioactive isotopes, carbon-14 dating, the limits of carbon-14 dating, the dating of older rocks and fossils, relative dating, relative age and absolute age.
• The chemical and physical processes that might have occurred that led to the first life forms.
• The First Organic Compounds on Earth: The Oparin hypothesis, the experimental evidence of Miller and Urey, examination of new evidence about the atmosphere of early Earth.
• From Molecules to Cell-Like Structures: Microspheres, coacervates, the experiments of Sydney Fox, the life like properties of microspheres and coacervates.
• The First Life Forms: Key processes of metabolism and replication, protobionts.
• The Origin of Heredity: RNA as the first genetic material, ribozyme, the ability to self-replicate, the role of natural selection.
• The Fossil Record: The fossil record shows change over time, why the fossil record is incomplete, types of organisms that do and do not form fossils.
• The First Single Celled Organisms: The anaerobic conditions on early Earth, first heterotrophic prokaryotes, rise of autotrophs, chemosynthesis, archaebacteria.
• Photosynthesis and Aerobic Respiration: The production of organic compounds in photosynthesis, the release of oxygen into the atmosphere, the damaging nature of oxygen, the evolution of aerobic respiration, cyanobacteria, production of ozone.
• The First Eukaryotes: Differences between prokaryotes and eukaryotes, the theory of endosymbiosis, evolution of mitochondria and chloroplasts, evidence for endosymbiosis.
• Sexual Reproduction and Evolution: Asexual reproduction in early bacteria, the role of sexual reproduction in natural selection and evolution.
• The First Multicellular Eukaryotes: Arrival of protists, algae, fungi, plants and animals, the Cambrian explosion, first animal phyla, early animals are herbivores, appearance of predators.
• The Colonization of Land: Solving the problem of reproduction without water and the problem of dehydration in an oxygen atmosphere, solutions to these problems, vascular tissue of plants, cuticle of plants, reproduction with pollen, the exoskeleton of arthropods, and the amniote egg.
• Large Scale Process Have Affected Life on Earth: Continental Drift, Mass extinctions, Adaptive radiations.
This PowerPoint was written with a typical biology I class (Grades 9 - 12) in mind. Both the PowerPoint and the included notes can be edited to meet your needs.
It usually takes me over a week to cover all of the slides on the PowerPoint due to the fact that this topic generates lively class discussion.
Related products include:
Task Cards: Earth's History and the Origin of Life
History of Life on Earth Question and Answer Review PowerPoint
History of Life on Earth Quizzes
Lab: Making Coacervates
The Geologic Time Scale Activity
Origin of Life of Earth Homework Assignments
Crossword Puzzle: Earth's History and the Origin of Life
Earth's History and the Origin of Life Unit Test
Darwin's Theory of Evolution PowerPoint and Notes
Classification and Taxonomy: The Diversity of Life Powerpoint with Teacher and Student Notes
Evolution and Classification: Warm Ups, Bell Ringers and Interactive Notebooks
Theory of Evolution Bundle
Classification and Taxonomy Bundle
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