OpenStax
Open Stax: Anatomy & Physiology: The Pituitary Gland and Hypothalamus
Learn about the hormones released by the pituitary gland, their target cells, and their principal actions, as well as the structure and function of the hypothalamus.
Microscopy UK
Microscopy Uk: Micscape Article Paramecium
Excellent article on a unicellular organism, the paramecium. Includes details on its environment, paramecium types, and environmental importance.
Florida State University
Florida State University: Molecular Expressions: Ribosomes
A defining resource for ribosomes to assist while studying cells. See an illustration of the structure and function in protein synthesis.
CK-12 Foundation
Ck 12: Life Science: 2.6 Nucleus
Discover the structure and function of the nucleus of the cell.
City University of New York
The World of Cells: Viruses
Alive or not, viruses are introduced in an easy to follow essay that explains many basic concepts.
Soft Schools
Soft Schools: Molecules of Life Quiz
Take an interactive quiz over the molecules of life. After completing the quiz, check your score, and then revisit any incorrect question for further review.
Soft Schools
Soft Schools: More Molecules of Life/biochemistry Quiz
Take this interactive, multiple-choice quiz over the organic molecules important to life, then review your score and any missed questions at the end.
Sophia Learning
Sophia: Nucleus
Learn the basic structure and function of the nucleus, or the control center of a eukaryotic cell.
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...
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."
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."
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.
Sophia Learning
Sophia: Organelles: Lesson 2
This lesson will give a general overview of how organelles help a cell function and will explain the importance of organelles in increasing surface area to volume ratios. It is 2 of 3 in the series titled "Organelles."
Sophia Learning
Sophia: Organelles: Lesson 3
This lesson will give a general overview of how organelles help a cell function and will explain the importance of organelles in increasing surface area to volume ratios. It is 3 of 3 in the series titled "Organelles."
![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.
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: 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.