Biology 4 kids
Biology4 Kids: Animal Systems
An overview of the structure and function of a complex, multicellular organism. This article discusses levels of organization and examples of systems.
BiologyWise
Biology Wise: An Overview of the Difference Between Nadh and Nadph
NADH and NADPH are enzymes involved in cellular processes. Explains how NADH participates in catabolic reactions where energy is released and NADPH is involved in anabolic reactions where energy is consumed. Their functions and chemical...
Cells Alive
Cells Alive:organelle Crossword #2
A crossword to help review the terms and definitions associated with organelles.
York University
York University: How Neurons Talk to Each Other
York University provides a good site on the physiology of nerve transmission. Embedded vocabulary help is available if you need it.
National Institute of Educational Technologies and Teacher Training (Spain)
Ministerio De Educacion: Los Seres Vivos Unicelulares Y Pluricelulares
In this unit you will be introduced to the complexity of living things. It also reviews the kingdom of nature, differentiating between their main features from those who are microscopic unit-cellular to the multi-cellular visible to the...
Curated OER
University of Washington: Neurons
Very strong introduction to neurons, and then a fair amount of information on their structure and function.
Curated OER
University of Washington: Neurons
Very strong introduction to neurons, and then a fair amount of information on their structure and function.
Curated OER
University of Washington: Neurons
Very strong introduction to neurons, and then a fair amount of information on their structure and function.
York University
York University: Neuron Graphic
York University provides a graphic which depicts the general structure of the neruron.
Curated OER
York University: Neuron Graphic
York University provides a graphic which depicts the general structure of the neruron.
McGraw Hill
Mc Graw Hill: Neurons
Introduction to neuron structure, function, and classification. Provides simple diagrams of neurons conducting an impulse and microscope images of nerve cells.
University of Kansas Medical Center
University of Kansas Medical Center: Gastrointestinal System
Investigate the human gastrointestinal system with this extensive collection of microscopic specimens.
University of Kansas Medical Center
University of Kansas Medical Center: Female Reproductive System
Examine this collection of microscopic specimen images from the female reproductive system.
Khan Academy
Khan Academy: Nucleus and Ribosomes
Discussion in detail of the structure and function of the nucleus and ribosomes of a cell and how they work together in the production of proteins.
Sophia Learning
Sophia: Nucleus
Learn the basic structure and function of the nucleus, or the control center of a eukaryotic cell.
BiologyWise
Biology Wise: How to Make a 3 D Dna Model Project
Describes the steps for how to make a model of DNA using colored polymer clay and wire. Students will gain a good understanding of the structure of DNA by doing this project.
BiologyWise
Biology Wise: Fluid Mosaic Model
The fluid mosaic model provides an explanation of the structure of biological membranes. It explains why a membrane can perform all of its functions, e.g., permeability and adhesion. This resource describes the main components of a cell...
BiologyWise
Biology Wise: Process of Spermatogenesis Explained
Describes how sperm cells are formed through the process of spermatogenesis and some factors that can negatively affect sperm formation.
US Department of Agriculture
United States Department of Agriculture: Ultrastructure of Esophagus
This site from the US Department of Agriculture provides brief notes on the structure of the esophagus and cell bodies of juvenile roundworms.
BiologyWise
Biology Wise: Mitochondrial Matrix
Discusses the structure of the matrix inside a mitochondrion and how hundreds of concentrated enzymes are held there. The matrix takes part in mitochondrial functions such as the Krebs cycle, the electron transport chain, ATP synthesis,...
McGraw Hill
Mc Graw Hill: Epithelial Tissue
The structure and function of epithelial tissues and basements membranes are explained in this concise site.
Sophia Learning
Sophia: Cytoplasm: Lesson 2
This lesson will discuss the structure and function of the cytoplasm. It is 2 of 5 in the series titled "Cytoplasm."
Sophia Learning
Sophia: Cytoskeleton: Lesson 3
This lesson will discuss the structure and function of the cytoskeleton. It is 3 of 4 in the series titled "Cytoskeleton."
Sophia Learning
Sophia: Central Vacuole: Lesson 4
This lesson will discuss the structure and function of the central vacuole. It is 4 of 4 in the series titled "Central Vacuole."