Virus Lytic Cycle
The lytic is the viral reproductive cycle in which a virus takes over all metabolic activities of a cell; replicates many times and destroy its host cell. 3-D animation shows the steps of a lytic infection. Grades 5-12. 1:14 min.
Virus Lysogenic Cycle
In a lysogenic cycle, viral nucleid acid becomes part of the host cell chromosome and it's replicated with it. Eventually the virus enters a lytic cycle and kills the host cell. 3-D animation takes you through the steps of the lysogenic cycle. Grades 7-12. 1:25 min.
Photosynthesis, Part 1
This is a short slidecast of the process of photosynthesis that starts with a defintion. A quote from the video: "The primary function of photosynthesis is to produce organic compounds useful to the cell. This is accomplished by using light, carbon dioxide, and water. Overall, photosynthesis converts light energy from the Sun to chemical energy."
Effect of Electromagnetic Waves
Amazing! Video shows how to pop popcorn using three cell phones.
Risk Factors For Squamous Cell Carcinoma -
Doctor identifies risk factors for squamous cell carcinoma, a type of skin cancer. Video explains why certain people are at much higher risk for this deadly cancer. 59 sec.
Understanding Basal Cell Carcinoma
Video has a doctor explaining what basal cell carcinoma is and who is at risk. Basal cell carcinoma is the most common form of all cancer. Images show what to look for in identifying this cancer. 3:11 min.
Macroporous hydrogels as vascularizable soft tissue â implant interfaces: materials characterizat
Implantable medical devices, such as biosensors and implantable drug delivery systems, function optimally when rapid solute exchange can occur between implant and surrounding tissue. However, almost all materials implanted into the body are encapsulated in a fibrous layer that prevents this rapid communication. Macroporous materials are known to change this response by allowing vascularized tissue ingrowth, however many questions still exist as to the role material properties play. In this work,
Plate Tectonics - the Movement of Continents California and Australia used to be neighbors and Brazil was close to or connected to Nigeria. What drives the engine of plate tectonics remains a mystery.
New Model for Juvenile Justice
A 7 minute video summarizing Missour;s new approach to juvenile justice. This new method for juvenile detention has seen surprisingly successful results, trading in the orange uniforms and cell blocks for therapists and dorm rooms.
From Embryo to Duckling
This video segment from NOVA: "The Shape of Things" charts the development of a duck embryo, from its earliest stages just after fertilization, through cell replication and differentiation, to the final stage, emergence from the protection of the eggshell. Closed captioning included. Run time 01:19.
Design of an eLearning System for Accreditation of
Non-formal Learning
This paper deals with issues related to the non-formal learning in vocational
education, and the role of ICT for providing appropriate accreditation model in such
education. The presented conclusions are based on the Leonardo da Vinci project
LeoSPAN. The paper emphasises on the development of a model and a prototype
of an adaptive eLearning system that ensures the pre-defined learner outcomes.
One of the advantages of the eLearning system is the flexibility for people who
upgrade and improve th
Undergraduate Research at the University of Memphis on Sickle Cell Disease.
Undergraduate Research at the U of M on Sickle Cell Disease.
The reversal of cell differentiation and prospects for cell replacement therapy
The inaugural Anne McLaren Memorial Lecture, "The reversal of cell differentiation and prospects for cell replacement therapy", given by Prof Sir John Gurdon FRS, University of Cambridge, at Lady Margaret Hall, Oxford, on 7 November 2008. Visit http://media.conted.ox.ac.uk/McLaren-2008 to view the full presentation from Professor Sir John Gurdon FRS, including his slides.
3.1 Protein diversity Of course, our bodies can't just be made up of squidgy bubbles of phospholipid, or we would collapse in a heap on the floor! Stiffer frameworks, both inside and outside the cells, also exist and help to define shape and add strength. These frameworks are formed largely from structural proteins, a class of polymeric materials that form fibres and filaments to provide mechanical support for cells and tissues. Structural proteins are made inside cells but are often then moved into the spa
2 Construction with lipids The cell membrane is constructed from lipids. Chemically, lipids are a rather varied group of compounds that include all the substances you might already think of as fats or oils. What they have in common is that they are all insoluble in polar liquids like water, but soluble in organic (carbon-based) solvents: by this I mean the sort of smelly solvents you tend to find in paints, glues and degreasing agents; chloroform is one example. Lipids make up the fatty components of living organisms a
Leading Innovation
Since innovation is “not necessarily always predictable,” Daniel Vasella declines to discuss it in a systematic way, and instead, focuses on a case study of one of his company’s flagship pharmaceuticals, Gleevec. The discovery, development and marketing of this drug, which fights the rare chronic myeloid leukemia (CM
7.344 The Fountain of Life: From Dolly to Customized Embryonic Stem Cells (MIT)
During development, the genetic content of each cell remains, with a few exceptions, identical to that of the zygote. Most differentiated cells therefore retain all of the genetic information necessary to generate an entire organism. It was through pioneering technology of somatic cell nuclear transfer (SCNT) that this concept was experimentally proven. Only 10 years ago the sheep Dolly was the first mammal to be cloned from an adult organism, demonstrating that the differentiated state of a mam
Nucleic acids and chromatin
This unit helps you understand the properties of nucleotides and how they contribute to secondary and tertiary structures of nucleic acids at the molecular level. You will learn about the different composition and roles of nucleic acids in the cell, their interactions with each other and the use of ribozymes, aptamers, antisense and hybridization as tools in molecular research. The unit covers the function of DNA packaging within the cell, the interactions between the DNA double helix and the nu
Globalization of Science: Opportunities for Competitive Advantage from Science in China, India and B
When Fiona Murray visited research centers in China recently, scientists greeted her quizzically: “People were baffled about what a business school professor was doing in stem cell and gene sequencing labs,” Murray says.
As it turns out, Murray’s tour was integral to her own MIT Sloan research exploring how
4.4 Predicting conformation from sequence
In this unit we explore how proteins are the 'doers' of the cell. They are huge in number and variety and diverse in structure and function, serving both the structural building blocks and the functional machinery of the cell. Just about every process in every cell requires specific proteins. The basic principles of protein structure and function which are reviewed in this unit are crucial to understanding how proteins perform their various roles.
