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Part of the "Visualizing Cell Processes" series. Includes the following modules: "Behavior of the Plasma Membrane," "Osmosis," "Transport Proteins," "Phagocytosis," "Pinocytosis," "Receptor Mediated Endocytosis," "Golgi Function," "Lysosomes and Digestion," "Microtubules," "Cilia," and "Actin and Myosin Motor Proteins."
Every cell in the body is a specific size. Host Trace Dominquez discusses some new scientific findings related to cell growth. A team of biologists has zeroed in on a previously unknown mechanism within the cell growth cycle that controls cell size. They made this fundamental finding by studying yeast cells, but it could provide insight to basic human biology. Part of the "Uno Dos of Trace" series.
Follows the journey of a red blood cell around the circulatory system to demonstrate the efficient and elegant design of oxygen and food delivery to all parts of the body and the removal of wastes before they can do harm. Shows how the veins and arteries are structured to perform their tasks: muscular arteries to transmit the force of the heartbeat, veins with valves to insure the blood's return to the heart.
For life to survive, it must adapt and readapt to an ever-changing Earth. The discovery of the Antarctic icefish has provided an example of adaptation in an environment both hostile and abundant, where the birth of new genes and the death of old ones have played crucial roles. Researchers Bill Detrich, Christina Cheng, and Art DeVries have pinpointed the genetic changes that enable icefish to thrive without hemoglobin and red blood cells and to avoid freezing in the icy ocean.
With support from the National Science Foundation, Liangfang Zhang and his team at UC-San Diego have created a nanosponge to combat drug-resistant infections, such as those caused by Methicillin-resistant Staphylococcus aureus (MRSA). The nanosponge, made from biocompatible, biodegradable polymer nanoparticles, is camouflaged with a red blood cell membrane. It circulates in the bloodstream, absorbing the toxins produced by infection. Once the nanosponges are fully loaded with toxins, they are safely disposed of by the liver. They are designed to work with any type of infection or poison that attacks the cellular membrane. Part of the National Science Foundation Series “Science Nation.”
The Magic School Bus is an award winning animated children’s television series based on the book series of the same title by Joanna Cole and Bruce Degen. It is notable for its use of celebrity talent and being both highly entertaining and educational. At this year's Teacherathalon, Ms. Frizzle squares off with Mr. Sinew, a muscle-bound gym teacher. Sinew easily wins the first of the three events. Thinking there's a problem, the kids go inside Ms. Frizzle to check her out. The bus takes them through her lungs to the bloodstream, where they get pumped through her heart to her calf muscle. But when Frizzle's leg muscle collapses from the strain of winning the second event, the kids discover that her red blood cells can't get oxygen to her muscles fast enough. Can the kids help Frizzle recover in time to win the final race?
Discusses the importance of monitoring the cardiovascular system and explains the process of respiration in the body. Animations demonstrate how the organs in the heart work to pump blood throughout the body. Other terminology includes: blood vessel, artery, pulse, vein, aorta, septum, atrium, ventricle, capillaries, pulmonary circulation, systemic circulation, coronary circulation, blood pressure, sphygmomanometer, plasma, red blood cells, white blood cells, platelet, lungs, and alveoli.
The body is like a self-supporting hospital, able to deal with its own with wounds, bacterial invasions, fractures, and obstructions to its various passages. Follows the sequence of events over seconds and weeks when skin or bone is damaged, and shows the defensive reactions of blood clotting, fever, and mending of bone fractures.
Take a look through a microscope at a virus attacking a cell and see the immune system in action. Viruses continue to replicate until they break apart the host cell and start spreading throughout the body, destroying healthy cells along the way. The immune system overpowers a virus with white blood cells and creates the antibodies that kill the same types of viruses quickly if they return.
Part of the "Inside the Living Cell" series. Provides an overview of the different kinds of cells, emphasizing the fact that all cells have a common organizational structure and carry out similar biochemical processes. Presents the discovery of cells, cell structures, organelle function, cell varieties, and the chemistry of life.
The cell cycle is the series of events that cells go through as they grow and divide. This title provides a discussion on each of the stages of the cell cycle: prophase, metaphase, anaphase, telophase, and cytokinesis. Part of the "Biology" series.
The Magic School Bus is an award winning animated children’s television series based on the book series of the same title by Joanna Cole and Bruce Degen. It is notable for its use of celebrity talent and being both highly entertaining and educational. It's the night of the rock lovers' annual Granite Awards, and Arnold is about to become the first kid ever to win the coveted Rocky Award. He's so excited; all he's been able to eat for weeks are "Seaweedies.” When he arrives for the big event, he’s nervous and orange. Once the class determines that the orange isn't on Arnold's skin, they shrink down to explore what's underneath. They discover that his whole body is made of living cells, and they're all orange.
The Magic School Bus is an award winning animated children’s television series based on the book series of the same title by Joanna Cole and Bruce Degen. It is notable for its use of celebrity talent and being both highly entertaining and educational. Ralphie's upset when his mom tells him he's too sick to go to school because he was supposed to host a FNN (Frizzle News Network) TV broadcast on health that day. Not one to leave a student behind, Ms. Frizzle takes the class on a trip inside Ralphie's body to figure out what's ailing him. However, once inside, Ralphie's white blood cells see the bus as a threat and start to attack.
In some parts of the world, there is an intimate connection between the infectious parasitic disease "malaria" and the genetic disease "sickle-cell anemia." A keenly observant young man named Tony Allison, working in East Africa in the 1950s, first noticed the connection and assembled the pieces of the puzzle. His story stands as the first and one of the best understood examples of natural selection, where the selective agent, adaptive mutation, and molecule involved are known-and this is in humans to boot. The protection against malaria by the sickle-cell mutation shows how evolution does not necessarily result in the best solution imaginable but proceeds by whatever means are available.
In some parts of the world, there is an intimate connection between the infectious parasitic disease "malaria" and the genetic disease "sickle-cell anemia." A keenly observant young man named Tony Allison, working in East Africa in the 1950s, first noticed the connection and assembled the pieces of the puzzle. His story stands as the first and one of the best understood examples of natural selection, where the selective agent, adaptive mutation, and molecule involved are known--and this is in humans to boot. The protection against malaria by the sickle-cell mutation shows how evolution does not necessarily result in the best solution imaginable but proceeds by whatever means are available.
Mosquitoes are annoying pests. They can interrupt a backyard picnic, and their bites cause red, itchy bumps. These pests can also carry viruses that make humans sick. In this episode, learn how and why the invasive Asian tiger mosquito is even more problematic than other varieties. Part of the "Seasonal Science" series.
There are only a few procedures that can detect very early signs of cancer. Those that do are often invasive, expensive, and uncomfortable. With support from the National Science Foundation, Vadim Backman of Northwestern University is developing technology that makes detecting cancer earlier. He’s doing it by shedding light on cancer cell development at the nanoscale level.
Homeostasis refers to the body’s ability to maintain a stable internal environment, and maintaining homeostasis requires that the body continuously monitors its internal conditions. From body temperature to blood pressure to levels of certain nutrients, each physiological condition has a particular set point. Topics covered include homeostasis, negative feedback loop, nervous system, endocrine system, digestive system, excretory system, musculoskeletal system, and the immune system. Part of the "Biology" series.
The body's internal defense system is an extraordinarily complex and efficient mechanism. The lymphatic system is the key to the human body's immune response. Through the activation of the blood and lymphatic circulation system, many infections are successfully fought off before they gain hold in the body. Illustrates what happens when a man is infected with the common cold.
The immune system has a tough job keeping human bodies free of harmful microbes. Humans come in contact with germs and bacteria every day, and the immune system is challenged to protect the body. Explores how the human body goes to battle against germs in order to keep people healthy and how sometimes the immune system requires assistance.
Showing collections 1 to 7 of 7
Biology related concepts
A collection containing 59 resources, curated by Benetech
A collection of Chemistry related resources
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Resources to teach younger students about animals
A collection containing 58 resources, curated by DIAGRAM Center
A collection of simulations from PhET.
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Collection of anatomy resources
A collection containing 21 resources, curated by Benetech
3D models and images of the entire periodic table of elements
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Resources related to vision
A collection containing 12 resources, curated by Charles LaPierre