Curated OER
Science Kids: Science Images: Biocomplexity Diagram
This biocomplexity spiral diagram depicts the multileveled complexity of organisms in their environments, including molecular, cellular, habitat, ecosystem and others.
ClassFlow
Class Flow: Glycolysis
[Free Registration/Login Required] Students launch themselves in to the three main stages of respiration in this Three Part Series. Glycolysis harvests chemical energy by oxidizing glucose to pyruvate. The Krebs Cycle and the electron...
CK-12 Foundation
Ck 12: Glycolysis
[Free Registration/Login may be required to access all resource tools.] The steps and products of glycolysis are examined in this activity. Students will learn how and where the initial reactions of glycolysis occurs.
CK-12 Foundation
Ck 12: Krebs Cycle
[Free Registration/Login may be required to access all resource tools.] After studying the Krebs Citric Acid Cycle, students will be able to identify what happens to the product of glycolysis and explain the steps and results of the cycle.
CK-12 Foundation
Ck 12: Electron Transport
[Free Registration/Login may be required to access all resource tools.] Discover how a mitochondrial electron transport chain works. This tutorial helps students identify the products of the Krebs cycle, describe a chemiosmotic gradient,...
Khan Academy
Khan Academy: Prokaryote Metabolism
Learn how prokaryotes get energy and nutrients, and find out the difference among chemotrophs, phototrophs, heterotrophs and autotrophs.
Soft Schools
Soft Schools: Mitosis Quiz
Take this interactive, multiple-choice quiz over mitosis, then review your score and any missed questions at the end.
Soft Schools
Soft Schools: Meiosis Quiz
Take an interactive quiz over meiosis. After completing the quiz, check your score, and then revisit any incorrect question for further review
CK-12 Foundation
Ck 12: Life Science: Cell Membrane
[Free Registration/Login may be required to access all resource tools.] All cells have a barrier around them that separates them from the environment and from other cells. This barrier is called the plasma membrane, or cell membrane....
Khan Academy
Khan Academy: Reproduction and Cell Division Unit Test
Take this nine-question unit test over reproduction and cell division unit test.
Science Education Resource Center at Carleton College
Serc: What Factors Influence How Efficiently the Work of a Cell Is Carried Out?
In this biology simulation, students discover what factors influence the action of enzymes on cellular work. Students will first explore the action of enzymes through a simulation in which their hands are the enzyme "toothpickase" and...
CK-12 Foundation
Ck 12: Physical Science: Biochemical Reaction Chemistry
[Free Registration/Login may be required to access all resource tools.] Definition of a biochemical reaction, the different types and the importance of enzymes in biochemical reactions.
Sophia Learning
Sophia: Enzymes Proteins That Pack a Punch!
Through a combination of slide show tutorials and a video demonstration, learn how enzymes work. [3:00]
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: Phases of the Cell Cycle
Article explores the life cycle of a cell and delves into the phases of the cell cycle.
Khan Academy
Khan Academy: Phases of Mitosis
Tutorial examines how a cell divides to make two genetically identical cells and explores the four basic phases: prophase, metaphase, anaphase, and telophase.
Khan Academy
Khan Academy: Cell Cycle Checkpoints
Learn how cells use checkpoints to regulate the cell cycle. This article provides an overview of cell cycle control, outlining the factors that influence a cell's decision to pause or progress at each checkpoint.
Khan Academy
Khan Academy: Cell Cycle Regulators
This article looks at a few of the most important core cell cycle regulators: proteins called cyclins, enzymes called Cdks, and an enzyme complex called the APC/C.
Khan Academy
Khan Academy: Cancer and the Cell Cycle
Article takes a look at how cancer develops and what's wrong with cancer cells. Also, delves into how abnormal forms of cell cycle regulators can contribute to cancer.
Khan Academy
Khan Academy: Apoptosis
Resource explains apoptosis (programmed cell death) and how it is different from necrosis (cell death due to injury).
Vision Learning
Visionlearning: Cell Biology: Membrane Bound Organelles
Evidence in support of endosymbiosis to show the evolution of organelles within cells.
Khan Academy
Khan Academy: The Citric Acid Cycle
Resource provides an overview of the steps of the citric acid cycle, also known as the Krebs cycle or tricarboxylic acid (TCA) cycle. Gives detailed examples of how this amazing cycle works and discusses the products of the cycle.
Khan Academy
Khan Academy: Oxidative Phosphorylation
Article presents an in-depth overview of oxidative phosphorylation which provides most of the ready chemical energy (ATP) used by the cells in your body.
Khan Academy
Khan Academy: Mitosis Questions
Use these questions to check your understanding of mitosis.