The Cell and its Organelles

The PCR Method - a DNA Copying Machine Lists of Nobel Prizes and Laureates The PCR Method - a DNA Copying Machine Play the Eye of the Donkey Game About the game Cells - The Building Blocks of Life By Shyamala IyerIllustrated by Dr. Biology All living beings are made up of cells. Some of them are made up of only one cell and others have many cells. The adult human body is made up of about 37 trillion cells. WOW, that's a lot of cells. Molecular Expressions Cell Biology: Structure of Cells and Viruses Introduction to Cell and Virus Structure At first glance, the petal of a flower or the skin on the back of a human hand may seem smooth and seamless, as if they were composed of a single, indistinct substance. In reality, however, many tiny individual units called cells make up these objects and almost all other components of plants and animals. The average human body contains over 75 trillion cells, but many life forms exist as single cells that perform all the functions necessary for independent existence.

The Split Brain Experiments Lists of Nobel Prizes and Laureates The Split Brain Experiments Play the Split Brain Experiments What are Proteins By Meredith Turnbough and Marcella MartosIllustrated by Sabine Deviche and Dr. Biology Legos are a familiar building block that have been used to create an almost unlimited number of shapes. If you have ever had to get inside a locked car or home you know that shape matters. If you don’t have the right key, you cannot open the door. The shape of the key is important. Fractal Globules in DNA : FractalFoundation.org Researchers have discovered how the DNA is packed into our cells in such a way that the roughly 2 meters of DNA in each cell doesn’t tangle, and is easily accessible when it’s needed to make proteins. And the key is: Fractal Geometry! ‘…Researchers found that the genome has a highly organized structure. Small pieces of DNA fold into globs, and those globs fold into larger globs and so on. The researchers report that this “globule of globules of globules” is fractal, meaning it is organized in such a way that it has the same pattern no matter how far you zoom in. This fractal shape is “super-dense, but has no knots,” ‘

Pavlov's Dog Lists of Nobel Prizes and Laureates Pavlov's Dog Play the Pavlov's Dog Game About the game Conditioned reflexes are reflexes you can learn compared to unconditioned reflexes that are built-in, or natural. Cell biology Understanding cells in terms of their molecular components. Knowing the components of cells and how cells work is fundamental to all biological sciences. Appreciating the similarities and differences between cell types is particularly important to the fields of cell and molecular biology as well as to biomedical fields such as cancer research and developmental biology. These fundamental similarities and differences provide a unifying theme, sometimes allowing the principles learned from studying one cell type to be extrapolated and generalized to other cell types.

Nerve Signaling Lists of Nobel Prizes and Laureates Nerve Signaling Play the Nerve Signaling Game About MRI Lists of Nobel Prizes and Laureates Play MRI the Magnetic Miracle Game About the game In the MRI imaging technique, strong magnets and radio waves are used for getting images of inner organs made of soft tissue, compared to X-ray imaging where you get images of hard tissue, like bones and teeth. Read More » The Ear Pages Lists of Nobel Prizes and Laureates The Ear Pages Play the Ear Pages Game Electrocardiogram Lists of Nobel Prizes and Laureates Electrocardiogram Play the ECG Game About the game

Immune Responses Lists of Nobel Prizes and Laureates Immune Responses Play the Immune Responses Game About The Immune System - Defending our Bodies Lists of Nobel Prizes and Laureates The Immune System Play the Immune System Game About the game Granulocytes, macrophages and dendritic cells are immune cells specialized in finding and "eating" bacteria, viruses, and dead or injured body cells. Read More »