Khan Academy
Khan Academy: Apoptosis
Resource explains apoptosis (programmed cell death) and how it is different from necrosis (cell death due to injury).
PBS
Pbs Learning Media: Mitochondria
Often referred to as the powerhouses of the cell, mitochondria provide the energy that powers nearly every cellular process. This essay by university lecturer John Ross describes in detail the structures and functions of these amazing...
Khan Academy
Khan Academy: Ap Biology: Cell Structure and Function: Membrane Transport
Practice exercise on membrane transport. This is new content.
University of Kansas Medical Center
University of Kansas Medical Center: Eye & Ear
Understand the structure and function of the eye and ear cells by examining these microscopic tissue samples.
BiologyWise
Biology Wise: Facts About Cytoplasm
Describes the composition of cytoplasm, its functions, the cell organelles suspended in it and what their functions are, and lots of other information about this vital cell component.
Untamed Science
Untamed Science: Biology: Human Biology: Blood
Learn about the structure and function of human blood as well as the composition of this complex substance in the human body through a series of video clips.
BiologyWise
Biology Wise: Peripheral and Integral Membrane Proteins
Discusses the structure of a cell membrane, the role of membrane proteins, and the differences between integral membrane proteins and peripheral membrane proteins as regards to their functions, location, and relationship with the...
Sophia Learning
Sophia: Endoplasmic Reticulum: Lesson 3
This lesson will discuss the structure and function of both rough and smooth endoplasmic reticulum. It is 3 of 6 in the series titled "Endoplasmic Reticulum."
Sophia Learning
Sophia: Endoplasmic Reticulum: Lesson 1
This lesson will discuss the structure and function of both rough and smooth endoplasmic reticulum. It is 1 of 6 in the series titled "Endoplasmic Reticulum."
CommonLit
Common Lit: "Let's See What You're Made Of" by Bird Brain Science
This informational, scientific text explains how cells, the smallest unit of a living organism, make up every living thing in the world. As you read, take notes on the comparisons used in the text to explain how cells work. [Free account...
BiologyWise
Biology Wise: Facts About Chloroplast
Explains how chloroplasts evolved into their present form, how photosynthesis takes place in them, where they are found in plants, physical characteristics, and other functions they perform.
Other
University of Cincinnati: Dna Structure and Function
This site explores the history and the science of DNA. Content also examines and considers the possibilities of genetic engineering and mutation.
University of Arizona
Biology Project: Cell Cycle and Mitosis Tutorial: Dna Basics
Tutorial on DNA basics that goes along with an online quiz over the material. Use the naviagation buttons at the bottom of the page to go to the quiz over the material.
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.
BiologyWise
Biology Wise: Chromosomes: The Carriers of Genetic Information
Explains what chromosomes are, their structure, their functions within a cell, and the health impact of mutations in a gene sequence.
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."
OpenStax
Open Stax: Anatomy & Physiology: Adaptive Immune Response: B Lymphocytes
Students will learn the structure and function of B-cells and the antibody classes and their functions.
Other
California State University: Biology Labs Online: Hemoglobin Lab
A set of virtual experiment assignments where students investigate the biochemistry of hemoglobin and the role it plays in the functioning of human red blood cells. Includes background information, glossary, online notebook, and...
National Health Museum
Access Excellence: Graphics Gallery of Biotechnology
This site provides simple diagrams on all major topics in cell biology, genetics and biotechnology.
Georgia Department of Education
Ga Virtual Learning: Biology: Taxonomy
In this multi-media module students derive the relationship between single-celled and multi-celled organisms and the increasing complexity of systems.
OpenStax
Open Stax: Anatomy and Physiology: Male Reproductive System
Students learn about the structure and function of the organs of the male reproductive system.
CK-12 Foundation
Ck 12: Episd: Organization of the Human Body
[Free Registration/Login may be required to access all resource tools.] From basic cells to tissue to organ systems, identify and understand the structures and functions of the human body's organization.
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.
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