CK-12 Foundation
Ck 12: Biology: Basics of Science Study Guide
This comprehensive study guide covers the key terms and basic concepts needed for an intro to science unit.
Savvas Learning
Pearson's the Biology Place: Cell Respiration
This excellent interactive website about cellular respiration provides an overview then goes into the details that can be so difficult to understand. The practice, review, and quiz pages should help solidify understanding.
Khan Academy
Khan Academy: Biology: The Scientific Method
Learn how you can test a hypothesis with the scientific method by reading this article.
Morning Earth
Morning Earth: All Lives Seek Balance: Introduction to Homeostasis
Scholars explore the Biology concept of homeostasis. The tutorial consists of definitions, examples, and pictures. Topics include homeostasis in organisms, how they work, and the internal environment.
Khan Academy
Khan Academy: Biology: Structure of a Cell: Introduction to Cells
Learn about cell theory in this article. [12:29]
Khan Academy
Khan Academy: Biology: Structure of a Cell: Introduction to Eukaryotic Cells
An article reviewing the structure of eukaryotic cells. Learn how the cells have a nucleus, organelles, and chromosomes.
Talk Origins Archive
Talk.origins: Introduction to Evolutionary Biology
An article giving a brief introduction to evolutionary biology. The article addresses misconceptions as well as the basics of the theory of evolution.
Indiana University
Is Classification Arbitrary or Not?
Students transition from classifying furniture to an understanding of classification of living organisms in this thorough lesson plan site.
University of Arizona
University of Arizona: Blood Types Tutorial
This site from the University of Arizona describes how blood type is passed on from parent to child. The tutorial covers the genetics of the ABO blood groups as well as Rh factor. There are even practice problems and blood type calculators!
National Science Foundation
National Science Foundation: Language and Linguistics
The language we use everyday reveals a great deal about who we are and where we come from. However, did you know that language is linked to psychology, biology, and other sciences? Explore the "science" of language: how the brain...
Khan Academy
Khan Academy: Chromosomes
This informative resource features an overview of genetic material: DNA, chromosomes, genomes, homologous chromosomes, sister chromatids, and haploid/diploid.
Khan Academy
Khan Academy: Ecology: What Is an Ecosystem
Learn what an ecosystem is, how energy and matter move through ecosystems, and what makes an ecosystem stable.
Khan Academy
Khan Academy: What Is Ecology?
A webpage giving an overview of ecology. Learn about the biotic and abiotic factors that make up an ecosystem as well as the different levels of ecology.