About This Chapter
Basic Concepts in Life Science - Chapter Summary
Use our engaging lessons to take a close look at basic concepts in life science. Examine facts about land conservation, renewable and non-renewable resources, fungi and much more with help from top instructors. In no time, you will be ready to:
- List and describe the characteristics that define living organisms
- Discuss bacteria, eukarya and other tree-of-life domains
- Describe the characteristics of fungi and protozoa
- Define and share examples of algae and viruses
- Compare and contrast plant and animal cells
- Differentiate between renewable and non-renewable resources
- Explain how land conservation uses preservation, restoration and more to combat land degradation
Tailor your review of the lessons in a manner that aligns with your personal schedule and study preferences. Access them anytime, in any order and as often as you'd like with any computer, smartphone or tablet that has an Internet connection. Find out how much you understand about basic concepts in life science by taking multiple-choice quizzes and a practice exam. The Dashboard keeps track of your progress and enables you to submit lesson topic questions to our experts.
1. The Defining Characteristics of Living Organisms
A house is not a living thing, but the people, animals, and plants living inside it are. So how do we define 'life'? Learn about seven characteristics that all living organisms have in common, no matter how different they may look on the outside.
2. Tree of Life Domains: Bacteria, Archaea & Eukarya
In this lesson we will consider how all the organisms on Earth are related to one another and the favored hypothesis for how all these organisms fit into three broad categories called domains.
3. What are Fungi? - Types and Characteristics
In this lesson, we will examine the group of organisms known as the fungi. This group includes the familiar organisms mushrooms, yeasts and molds. We will look at several major characteristics of fungi, as well as a few disease-causing fungi.
4. What are Protozoa? - Definition, Characteristics & Examples
Taxonomy is the realm of science that attempts to group similar organisms together, which is not always an easy task. In this lesson, we will examine the protozoa, a diverse group of organisms that didn't really fit anywhere else.
5. What is Algae? - Definition, Characteristics & Examples
Plants are not the only organisms capable of carrying out photosynthesis. In this lesson we will look at algae and how an algal species can be differentiated from other organisms and microbes.
6. What Are Viruses? - Definition, Structure & Function
In this lesson, you'll learn some historical facts about viruses and the material they are composed of. Find out more as we review the capsid, nucleic acids, the viral envelope, viruses, virions, bacteriophages and virology.
7. The Difference Between Plant and Animal Cells
While both plant and animal cells are eukaryotic and share many similarities, they also differ in several ways. Learn about the key differences between these two cell types in this lesson.
8. Renewable & Non-Renewable Resources: Definition & Differences
We use a variety of Earth's resources, but not all of them will be around forever. This lesson explains the difference between resources that can be regenerated for our use and those that are gone after they are used once.
9. Land Conservation: Preserving and Restoring Ecosystems
Humans have degraded a large portion of natural land. The field of land conservation has become popular as a way to fix this problem. Land conservation attempts to combat land degradation through preservation, restoration, remediation, and mitigation.
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