The people who came to California in search of gold were faced with the threat of disaster in every step of their journey. Many came by ship, even though shipwrecks were commonplace ? one set of lithographs depicts four shipwrecks that occurred within 60 days. Earthquakes were another fact of life in California. Sensational newspaper illustrations like "Earth Quakey Times," and photographs showing buildings in shambles, helped build the state's reputation as an "earthquake capital." Earthquakes
Medicine Games: Incredible Megacell Game
Play a game and find out about a Nobel Prize awarded discovery or work! The compartments of the cell, the organelles, are so small that it was impossible to study their structure until the electron microscope became available in 1938. Albert Claude, Christian de Duve and George E. Palade were awarded the Nobel Prize in Physiology or Medicine in 1974 for developing methods making it possible to take a closer look at the organelles and for discovering some of them.
Development and characterization of surfactant aggregates as pseudostationary phases in electrokinet
Electrokinetic chromatography (EKC) is a mode of capillary electrophoresis based on the partitioning of solutes between a second retentive phase and the run buffer. The second retentive phase, known as a pseudostationary phase, can be comprised of an array of materials including: micelles, vesicles, microemulsions, cyclodextrins, crown ethers and polymers. Due to the variety of possible additives as well as the versatility of the technique, EKC has been used for a wide variety of applications in
In-vitro tiered approach alternative to live animal testing for determination of ocular or dermal ir
There is a continual need for information concerning the potential for chemicals, if inadvertently splashed into the eyes, to cause effects from irritation to total blindness. This information is currently generated by exposing the eyes of live rabbits to the chemical. As can be imagined, this often results in severe distress to the animal while generating information that we have shown to be discernable without putting any animals at risk. This may be accomplished by replacing the live animal t
Essential Science for Teachers: Life Science: Session 4. Plant Life Cycles
What is a plant? One distinguishing feature of members of the Plant Kingdom is their life cycle. In this session, flowering plants serve as examples for studying the plant life cycle by considering the roles of seeds, flowers, and fruits. A comparison to animal life cycles reveals some surprising similarities and intriguing differences.,Seeds and their plants are similar to eggs and animals.
Though it brings us many benefits, the march of technology makes an encompassing surveillance network seem almost inevitable, and radically changes our expectations of privacy. We owe many of the expectations of privacy we used to enjoy to a combination of immature technology and insufficient manpower to monitor us. But these protective inefficiencies are giving way to technologies of data processing and digital surveillance that will change our beliefs about privacy. We are widely tracked by pu
Essential Science for Teachers: Life Science: Session 2. Classifying Living Things
How can we make sense of the living world? During this session, a systematic approach to biological classification is introduced as a starting point for understanding the nature of the remarkable diversity of life on Earth.,This clip is a graphic showing the basis for photosynthesis.
Cell Biology and Cancer
This curriculum supplement brings into the classroom new information about some of the exciting medical discoveries being made at the National Institutes of Health (NIH) and their effects on public health. This set is being distributed to teachers around the country free of charge by the NIH to improve science literacy and to foster student interest in science. The first three supplements in the series are designed for use in senior high school science classrooms: Emerging and Re-emerging Infect
Essential Science for Teachers: Life Science: Session 3. Animal Life Cycles
One characteristic of all life forms is a life cyclefrom reproduction in one generation to reproduction in the next. This session introduces life cycles by focusing on continuity of life in the Animal Kingdom. In addition to considering what aspects of life cycles can be observed directly, the underlying role of DNA as the hereditary material is explored.,Students are asked what existed before a bird becomes a bird? Students explain their ideas about eggs and birds. They present interesting a
Mitochondrial Control Region
Every human cell has a "second" genome, found in the cell's energy-generating organelle, the mitochondrion. In fact, each mitochondrion has several copies of its own genome, and there are several hundred to several thousand mitochondria per cell. This means that the mitochondrial (mt) genome is highly amplified. While each cell contains only two copies of a given nuclear gene (one on each of the paired chromosomes), there are thousands of copies of a given mt gene per cell. Because of this high
Physical geography is the study of the earth's dynamic systems -- its air, water, weather climate, landforms, rocks, soils, plants, ecosystems and biomes -- and how humans interact with the earth's systems. Physical geography is the study of the world around you. Everyone, every day, interacts with the earth's dynamic systems. I challenge you to join me on an exploration of the complex, and exciting world in which you live! This is a freshman level college course in physical geography. It requir
(Video) Nobel Lecture Series - Eric Accili.
Eric Accili, SFU kinesiology professor, on work of Rod MacKinnon who won the Nobel Prize for Chemistry for producing an image of cell membrane channels.
An Introduction to Plant Vascular Systems
As a laboratory exercise that uses scientific techniques to add an investigative component to study the vascular system of plants.
Assembly of Proteins in Membranes II from the course General Biochemistry and Molecular Biology
General Biochemistry and Molecular Biology - Fall 2006. This course covers molecular biology of prokaryotic and eukaryotic cells and their viruses. Mechanisms of DNA replication, transcription, translation. Structure of genes and chromosomes. Regulation of gene expression. Biochemical processes and principles in membrane structure and function, intracellular trafficking and subcellular compartmentation, cytoskeletal architecture, nucleocytoplasmic transport, signal transduction mechanisms, and c
Ross Cranston, QC in Conversation with Lord Mackay of Clashfern
The separation of powers idea is at the heart of all legal democracies. Yet within those democracies there will often be positions of high office which require their holders to perform functions which are both legal and political. In this series of events senior figures who hold or have held positions of this type talk about their lives in the law, the nature of their office, the institutions which they serve, their roles and responsibilities within those institutions, the role of lawyers in gov
7.340 Regenerative Medicine: from Bench to Bedside (MIT)
Regenerative medicine involves the repair and regeneration of tissues for therapeutic purposes, such as replacing bone marrow in leukemia, cartilage in osteoarthritis or cells of the heart after a heart attack. In this course, we will explore basic mechanisms of how cells differentiate into specific tissues in response to a variety of biologic signaling molecules. We will discuss the use of such factors for in vitro tissue production. We will also study the cellular mechanisms involved in the cl
Environmental Risk Assessment - Approaches, Experiences and Information Sources
This website provides access to a report from the European Environment Agency that gives a broad overview of approaches and experiences on how to assess ecological and human information on health risks. The chapters are targeted to different users such as industry, scientists and policy makers. Links to information sources, organizations, software models, EU legislation, and publications are also provided.
Social issues and GM crops
The genetic manipulation of plants and animals and their use in agriculture is one of the most controversial scientific developments of recent times. This unt takes a look at the 'science behind the headlines' and the complex interactions between scientific and social factors. By the end of the unit it's hoped that you will have a clearer idea of both what is GM makes possible as well as what may be thought desirable.
5.3.1 Allosteric regulation
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.
Stem Cells: Programming and Personalized Medicine
After years of relentless lab work, rising and falling expectations, and the challenge of a sometimes hostile public, Rudolf Jaenisch says, “The scenario that looked like a fantasy … has come closer to reality. We can study complex human diseases in a Petri dish and potentially contribute to therapy.” In this l