Curated OER
Bacteria
There is an important distinction between the bacteria that most students recognize as having a negative impact, and those that live in a symbiotic relationship with us. Sal looks at the mechanisms by which bacteria accumulate variation...
Khan Academy
Introduction to Evolution and Natural Selection
The evidence for natural selection is presented as a random variation of a characteristic allowing a particular strain of organism to survive with a higher probability of successful reproduction. Population change over a short period of...
Crash Course
Your Immune System: Natural Born Killer
Being too clean can inhibit your immune system from functioning properly, thus it is possible that washing your hands too much can actually make you sick. Pupils explore the difference between innate and acquired immunity with a video...
MinuteEarth
What is Skin For?
Smooth or scaly, skin is sensational! Besides keeping us from being gooey, what does it do? Pupils embark on an integumentary investigation with a short video about skin. Topics include the special features of skin cells, how skin...
FuseSchool
How are Pathogens Spread and Controlled?
How can we stop the tiny terrors that cause illness? Junior epidemiologists examine the methods used to control the spread of pathogens with a video from from a biology playlist. The narrator describes the benefits of hygiene,...
Nemours KidsHealth
How the Body Works: Immune Cells
Nate is learning about human body systems, and in this episode he finds out about how important the immune system is. The leucocyte army explains that bacteria, viruses, fungi, and parasites can pose a threat. The nose serves as the...
FuseSchool
Human Defense Systems Against Pathogens
With so many harmful agents around us, how do humans stay healthy? Find out by watching an informative video from a larger biology playlist that details our defenses against a variety of pathogens. The narrator describes the body...
FuseSchool
What Are Vaccinations?
Are vaccinations necessary in preventing illness? As part of a larger playlist, a short, yet informative video describes what vaccines are and how they work in the body. Viewers witness the introduction of the vaccine culture and how the...
Khan Academy
Khan Academy: What Is Pneumonia?
Pneumonia is a medical condition where lung tissue becomes inflamed, usually caused by a virus or bacteria. Learn how shortness of breath, cough, and fever are common symptoms of this condition and why they occur in pneumonia.