Howard Hughes Medical Institute
Hhmi: Bio Interactive: Rna Folding
Since RNA is single-stranded, it can fold upon itself and form structures that are protein-like in both appearance and functionality. [0:33]
Howard Hughes Medical Institute
Hhmi: Biointeractive: Translation
Watch this microscopic animation of genetic translation in action. [2:06]
Howard Hughes Medical Institute
Hhmi: Bio Interactive: Using Small Molecules to Modulate a Protein
This video illustrates how a small molecule binds to a protein. As a result of the binding, the protein alters its shape and becomes inactivated. [1:10]
Howard Hughes Medical Institute
Hhmi: Biointeractive: Signal Molecules Trigger Transcription Factors
This animation shows varying concentrations of a signaling molecule activate different transcription factors and determine cell fate. [2:04]
Howard Hughes Medical Institute
Hhmi: Bio Interactive: Diversity of Small Molecules
In this animation, a molecular menagerie of small molecules is displayed, with two particular molecules singled out for attention: rapamycin and furrowstatin. [1:57]
Howard Hughes Medical Institute
Hhmi: Bio Interactive: Zebrafish Heart Regeneration
The zebrafish heart is similar to the human heart in many respects. But unlike the human heart, the fish heart closes wounds rapidly and then regenerates to nearly full function. Fibroblast growth factor (FGF) is an important molecule in...
Howard Hughes Medical Institute
Hhmi: Biointeractive: Location of the Hypothalamus
This video clip shows the location of the hypothalamus in the brain of a mouse. Teaching tips included. Quicktime or Windows Media Player formats. [0:33]
Howard Hughes Medical Institute
Hhmi: Biointeractive: Anole Lizards: An Example of Speciation
This animation features the anole lizards as an example of how a single species can split and multiply into many different species with distinct traits. [2:38]
Howard Hughes Medical Institute
Hhmi: Biointeractive: Gleevec Inhibits Cancer Causing Kinase Bcr Abl
See the drug Gleevec in action as it binds to and inactivates BCR-ABL, a mutant kinase that causes chronic myeloid leukemia. [3:31]
Howard Hughes Medical Institute
Hhmi: Bio Interactive: Lactose Digestion in Infants
A quick video clip that shows the lactase enzyme produced in the small intestine of infants. It digests lactose by breaking it into glucose and galactose. [0:53]
Howard Hughes Medical Institute
Hhmi: Bio Interactive: Pocket Mouse Evolution
This simulation shows the spread of a favorable mutation through a population of pocket mice. Even a small selective advantage can lead to a rapid evolution of the population. [1:05]
Howard Hughes Medical Institute
Hhmi: Bio Interactive: Planarian Regeneration and Stem Cells
Mini-documentary on the use of stem cells for regeneration of damaged cells.
Howard Hughes Medical Institute
Hhmi: Biointeractive: The Biology of Skin Color
Penn State University anthropologist Dr. Nina Jablonski walks us through the evidence that the different shades of skin color among human populations arose as adaptations to the intensity of ultraviolet radiation in different parts of...
Howard Hughes Medical Institute
Hhmi: Bio Interactive: Human Embryonic Development
This slideshow helps you discover the beginning of embryonic development and how it is fertilized, how it grows, and how it, in turn, becomes a pregnancy. [2:18]
Howard Hughes Medical Institute
Hhmi: Bio Interactive: Penicillin Acting on Bacteria
The role of penicillin in the body. [0:33]
Howard Hughes Medical Institute
Hhmi: Bio Interactive: Controlling Animal Locomotion
A presentation focusing on how different animal moves by examining different gaits. The process of spinal cord interneurons and brain signaling pathways are defined and explained for different animal movements like hopping or galloping....
Howard Hughes Medical Institute
Hhmi: Bio Interactive: Managua: Rapid, Unplanned Urbanization
A 40-second video instructing viewers on the dangers of unmanaged water.
Howard Hughes Medical Institute
Hhmi: Bio Interactive: Cultured Human Embryonic Stem Cells
Video on cell cultures derived from human embryonic stem cells that can reproduce indefinitely and can differentiate into specialized cell types. [1:17]
Howard Hughes Medical Institute
Hhmi: Bio Interactive: Microarrayer in Action
See how a microarraying robot delivers hundreds of small molecules to a series of slides. [2:00]
Howard Hughes Medical Institute
Hhmi: Bio Interactive: Demo: Testing a Student's Proprioceptive Reflex
See how a knee-jerk reflex depends on a simple circuit of proprioceptive sensory neurons and spinal motor neurons. [1:21]
Howard Hughes Medical Institute
Hhmi: Bio Interactive: How Tumors Grow
A look inside the birth and life of a tumor. See how the growth begins, and how blood vessels form to support the tumor. [1:12]
Howard Hughes Medical Institute
Hhmi: Bio Interactive: Dna Gene Chip Explanation
Observe a scientist describe the process used to extract DNA from a cell and to analyze it on a gene chip. [1:41]
Howard Hughes Medical Institute
Hhmi: Bio Interactive: Pocket Mouse and Predation
Students watch a short animation showing how the pocket mouse adapts and evolves in a changing environment. Includes discussion questions. [0:20]
Howard Hughes Medical Institute
Hhmi: Bio Interactive: Natural Selection Adaptation
Classroom resources paired with a ten-minute video highlight the groundbreaking research of physical and genetic evolutionary changes in rock pocket mouse populations. [10:31]