About This Chapter
The Origin and History of Life On Earth - Chapter Summary and Learning Objectives
It's an age old question: Where did we come from? It brings about even more questions: How were human beings created? Was there such a thing as the Big Bang? How does religion play into the ideas of how life was created? There are many schools of thought on this topic. Throughout the scientific community, supernatural ideas are often dismissed, but those rooted in scientific proof are usually based upon life coming from non-living things. There are various theories as to how exactly this happened, which is what you'll be studying in this chapter. Our instructor will help you to understand the different pieces of evidence, the various ideas, and the main concepts connected with the question of how life began on earth. Some of the things you will learn about in these video lessons include:
- How life evolved on earth
- Theories on evolution
- A timeline of life on earth
- Characteristics of the major eras
- The theory of the evolution of cells
- Difference between prokaryotic and eukaryotic cells
|The Origin of Life on Earth: Theories and Explanations||Examine the various theories about how life started on earth.|
|The History of Life on Earth: Timeline and Characteristics of Major Eras||Explore the different eras of life on earth to discover each period's characteristics.|
|The Endosymbiosis Theory: Evolution of Cells||Analyze how cells evolved into living beings.|
|Evolutionary Change||Discover the different ideas about how evolution occurs.|
1. The Origin of Life on Earth: Theories and Explanations
Ever wonder how living things came from non-living things? We will explore what conditions on early Earth may have created life from non-living items.
2. Abiotic Synthesis & the Origin of Life
Abiotic synthesis means making compounds using non-living molecules. It's possible that organic molecules formed before life began and built up to make the first cells. Let's explore this theory and its hallmark experiment.
3. The History of Life on Earth: Timeline and Characteristics of Major Eras
The Earth is over 4 billion years old. Ever wonder what happened during certain time periods in that large amount of time? We will look at the major eons and eras of Earth's history along with important characteristics of each.
4. The Endosymbiosis Theory: Evolution of Cells
Ever wonder why some cells are very simple and others are complex with countless organelles to remember? We will look at how simple cells evolved to become more complex cells - as well as evidence to support this.
5. Evolutionary Change: Definition and Forms
You've probably heard of Charles Darwin and evolution. We know that evolution is change over time, but here we will look at how these changes may have occurred during Earth's history.
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Other chapters within the Science 101: Intro to Natural Sciences course
- Atomic Structure & Fundamentals of Matter
- Introduction to Thermodynamics
- Cell Biology Fundamentals
- Introduction to Molecular Biology
- Introduction to Biochemistry
- Cellular Reproduction Processes
- Molecular Genetics Overview
- Plant Anatomy, Physiology & Processes
- Animal Reproduction, Growth and Development
- Animal Anatomy, Physiology & Functions
- Human Anatomy & Physiology
- Environmental Science Fundamentals
- Introduction to Ecology
- Basics of Evolution
- Phylogeny and the Classification of Organisms
- Studying for Science 101