Biology 4 kids
Biology4 Kids: Microfilaments Stringy Proteins
A short, informational text piece which explains the structure and function of microfilaments inside a cell.
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.
OpenStax
Open Stax: Protein Synthesis
Most structural components of the cell are made up, at least in part, by proteins and virtually all the functions that a cell carries out are completed with the help of proteins. This site explains protein synthesis, including that of...
BiologyWise
Biology Wise: Rough Endoplasmic Reticulum
The endoplasmic reticulum is found in eukaryotic cells and has three layers. Proteins are synthesized in the rough endoplasmic reticulum and its structure and functions are described here.
Sophia Learning
Sophia: Lysosome: Lesson 2
This lesson will discuss the structure and function of the lysosome. It is 2 of 4 in the series titled "Lysosome."
Sophia Learning
Sophia: Lysosome: Lesson 3
This lesson will discuss the structure and function of the lysosome. It is 3 of 4 in the series titled "Lysosome."
Sophia Learning
Sophia: Nucleus
Learn the basic structure and function of the nucleus, or the control center of a eukaryotic cell.
![Educaplus: Celula Vegetal [In Spanish] Activity](https://content.lessonplanet.com/knovation/original/438674-ad8d796368c7a986235af90a5ba62754.jpg?1661804172 "Educaplus: Celula Vegetal [In Spanish] Activity")
Educaplus (Jesús Peñas Cano)
Educaplus: Celula Vegetal [In Spanish]
Learn the parts and function of a plant cell.
Other
Guam: Phylum Platyhelminthes, or Flatworms
High school level description of the phylum Platyhelminthes, or flatworms, including characteristics, reproduction, and class.
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: 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.
Cosmo Learning
Cosmo Learning: Introduction to Biology
A collection of video lectures from an introduction to biology course taught at the Massachusetts Institute of Technology. The course teaches "biological function at the molecular level" with thirty-five lectures. Lectures vary in length...
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,...
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."
Sophia Learning
Sophia: Centrioles: Lesson 3
This lesson will discuss the structure and function of the centrioles. It is 3 of 4 in the series titled "Centrioles."
Sophia Learning
Sophia: Centrioles: Lesson 4
This lesson will discuss the structure and function of the centrioles. It is 4 of 4 in the series titled "Centrioles."
McGraw Hill
Mc Graw Hill: Epithelial Tissue
The structure and function of epithelial tissues and basements membranes are explained in this concise site.
Curated OER
The World of Cells: Mitochondria
Check this out if you want only the basic information on structure and function of mitochondria. It is accurate, but not too detailed.