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video 13 minutes 

animation of agglutination

Book section on NCBI

Fact sheet: Metastatic cancer is cancer that has spread from the place where it first started to another place in the body. A tumor formed by metastatic cancer cells is called a metastatic tumor or a metastasis.

Penn Medicine Cancer resources for patients and healthcare professionals

animation on insulin prduction 4:12

The Australian Stem Cell Centre (ASCC), developed the following fact sheets in respect of stem cell science and related topics. Please note that whilst the Fact Sheets were updated shortly before the ASCC closed in 2011, users should note that they are no longer being updated and be aware that the content in them may be out of date. Although the content of the fact sheets is unlikely to have been superseded please do not rely on them for any decision-making purposes and they should be used as part of a wider reading program on the subjects.

Q/A format comprehensive fact sheet at student accessible reading level.

Animation shows how proteins, fats, and carbohydrates are digested by the digestive system with the use of different enzymes. Grades 7-12. 2:45 min.

informative site on wide array of topics about bacteria including articles and case studies

Birth season on risk of mood disorders

The collection of proteins within a cell determines its health and function. Proteins are responsible for nearly every task of cellular life, including cell shape and inner organization, product manufacture and waste cleanup, and routine maintenance. Proteins also receive signals from outside the cell and mobilize intracellular response. They are the workhorse macromolecules of the cell and are as diverse as the functions they serve.

This interrupted case study examines basic concepts of chemical bonding by telling the story of "Madison," a young girl eager to learn how her hair can transition from natural curls to straight, smooth tresses. The case can be used to teach or review the major categories of bonds (ionic, covalent and hydrogen), major macromolecules of life, and hydrolytic and dehydration reactions. It also explores how chemical relaxers and heat through blow drying and flat-ironing can change the nature of straight, wavy and curly hair through the disruption of protein shape. Students will thus learn what it means when a protein has become denatured and how various variables such as pH, heat and salts can lead to the unraveling of the three-dimensional shape of proteins. This case is suitable for an AP high school course, or for an introductory biology or chemistry course for majors or non-majors. This activity can also be used as a review of basic biology and chemistry for students in an upper-level biochemistry course.

Why they bite preferentially in 1 minute.