CK-12 Foundation
Ck 12: Phospholipid Bilayers
[Free Registration/Login may be required to access all resource tools.] Tutorial describes the detailed structure and function of the plasma membrane, explains semipermeability, and summarizes the structure of a phospholipid.
CK-12 Foundation
Ck 12: Membrane Proteins
[Free Registration/Login may be required to access all resource tools.] Activity explores proteins in the plasma membrane describing their structure and function. The Fluid Mosaic Model is also summarized.
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Ck 12: Osmosis
[Free Registration/Login may be required to access all resource tools.] Tutorial defines osmosis and the difference between osmosis and diffusion. Students will learn how to distinguish solute from solvent and solution and the hypotonic,...
CK-12 Foundation
Ck 12: Facilitated Diffusion
[Free Registration/Login may be required to access all resource tools.] In this activity students will learn about facilitated diffusion and the role of transport proteins, channel proteins, and carrier proteins.
CK-12 Foundation
Ck 12: Active Transport
[Free Registration/Login may be required to access all resource tools.] This tutorial serves as an introduction to active transport and explains how to distinguish active transport from facilitated diffusion.
CK-12 Foundation
Ck 12: Sodium Potassium Pump
[Free Registration/Login may be required to access all resource tools.] Tutorial explains the function of the sodium-potassium pump. Students will learn the difference between a concentration gradient and an electrochemical gradient.
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Ck 12: Exocytosis and Endocytosis
[Free Registration/Login may be required to access all resource tools.] In this lesson, students will learn the difference between exocytosis and endocytosis and distinguish phagocytosis from pinocytosis. They will also be able to define...
CK-12 Foundation
Ck 12: Cellular Respiration
[Free Registration/Login may be required to access all resource tools.] Students are provided with an overview of cellular respiration and mitochondria. They will learn the role of cellular respiration and its three stages, describe the...
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Ck 12: Fermentation
[Free Registration/Login may be required to access all resource tools.] Tutorial presents an overview of fermentation explaining its benefits. Students will be able to distinguish lactic acid fermentation from alcoholic fermentation and...
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Ck 12: Glucose and Atp
[Free Registration/Login may be required to access all resource tools.] Students take a look at glucose and ATP. They will be able to explain the structure of ATP and will learn how ATP is a source of energy for a cell.
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.
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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,...
CK-12 Foundation
Ck 12: Plant Cell Structures
[Free Registration/Login may be required to access all resource tools.] Exercise provides an overview of special structures found in plant cells. It explains the function of the cell wall, explores the role of the central vacuole, and...
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Ck 12: Light Reactions of Photosynthesis
[Free Registration/Login may be required to access all resource tools.] The first stage of photosynthesis, light reactions, is summarized. The steps are listed, photolysis and the role of ATP synthase is explained, and how the energy of...
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Ck 12: Calvin Cycle
[Free Registration/Login may be required to access all resource tools.] The second stage of photosynthesis, the Calvin Cycle, is described. Students will learn how to write the overall photosynthesis equation, explain RuBisCo, describe...
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Ck 12: Dna and Chromosomes
[Free Registration/Login may be required to access all resource tools.] Tutorial serves as an introduction to chromosomes. It defines genes, chromosomes, and homologous chromosomes, while providing an explaination of chromatids and...
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Ck 12: Cell Division in Prokaryotes and Eukaryotes
[Free Registration/Login may be required to access all resource tools.] No matter what the cell, all cells come from preexisting cells through the process of cell division. This module provides an overview of cell division in prokaryotes...
CK-12 Foundation
Ck 12: Cell Cycle and Cancer
[Free Registration/Login may be required to access all resource tools.] Cell division is just one of several stages that a cell goes through during its lifetime. Students will learn about the phases of the cell cycle, specifically the...
CK-12 Foundation
Ck 12: Cell Cycle, Mitosis and Cytokinesis
[Free Registration/Login may be required to access all resource tools.] A description of the stages of eukaryotic cell division, a summarization of mitosis and the metaphase plate, an explanation of the function of the centrioles and the...
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Ck 12: Meiosis
[Free Registration/Login may be required to access all resource tools.] How do you make a cell with half the DNA? Meiosis. This activity outlines the phases of meiosis, provides an overview of sexual reproduction, and describe how...
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Ck 12: Gametogenesis, Advance
[Free Registration/Login may be required to access all resource tools.] Did you know the ostrich egg is just one cell? Tutorial describes the process of gametogenesis. and also compares and contrasts spermatogenesis and oogenesis.
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Ck 12: Genetic Variation in Organisms
Genetic variation helps ensure the survival of a species. It is this variation that is the essence of evolution. Without genetic differences among individuals, "survival of the fittest" would not be likely. This activity discusses how...
CK-12 Foundation
Ck 12: Central Dogma of Molecular Biology
[Free Registration/Login may be required to access all resource tools.] This module states and explains the central dogma of molecular biology which was conceived by Francis Crick.