Biotechmovies. Bioinformatics Science Fair Projects & Experiments. GENIE Resources - Using a micropipette video. Biodiesel Cons" Photo courtesy Paul RoesslerMicroalgae, organisms from which a diesel-like fuel can be derived: Cultured in the American southwestern deserts, NREL-developed microalgae may one day produce large amounts of lipids for conversion to biodiesel fuel. Of course, nothing is without penalty, and biodiesel does have its drawbacks. Some have to do with the fuel itself, and many have to do with the bigger picture. One of the problems with the fuel itself is the increase in NOx in biodiesel emissions. Often, in diesel fuel manufacturing, when you decrease the amount of particulate matter in the emissions, there is a corresponding increase in nitrogen oxides, which contribute to smog formation.
Another problem is biodiesel's behavior as a solvent. Also, in some engines, there can be slight decrease in fuel economy and power. The major drawbacks to biodiesel are connected to the bigger picture, namely the market and associated logistics. So how much do we make? Principle of the PCR. There are three major steps in a PCR, which are repeated for 30 or 40 cycles.
This is done on an automated cycler, which can heat and cool the tubes with the reaction mixture in a very short time. at 94°C : During the denaturation, the double strand melts open to single stranded DNA, all enzymatic reactions stop (for example : the extension from a previous cycle). at 54°C : The primers are jiggling around, caused by the Brownian motion. Ionic bonds are constantly formed and broken between the single stranded primer and the single stranded template. The more stable bonds last a little bit longer (primers that fit exactly) and on that little piece of double stranded DNA (template and primer), the polymerase can attach and starts copying the template. At 72°C : This is the ideal working temperature for the polymerase. Figure 3 : The different steps in PCR. Animated picture of PCR Because both strands are copied during PCR, there is an increase of the number of copies of the gene. Scientific American Frontiers:The Gene Hunters:Teaching Guide:Building an Electrophoresis Chamber.
This activity page will offer: Assemble a gel chamber for separating mixtures Observe separation influenced by electric charge Operationally define separation through gel electrophoresis Plastic ice cube molds Aluminum foil 9 volt battery Connecting wires with alligator clips Scissors Buffer solution (as prepared by your instructor)** Medicine dropper (or fine laboratory pipette) Warm liquid agar solution *** Food coloring (various colors) {*style:<b><b> </b></b>*} * Prior to this activity, use a small saw to carefully separate a plastic ice cube tray into sections with 2 or 4 individual molds. ** Prepare 1 gram of baking soda in 100 ml of water *** Prepare 1.0 grams non-nutrient agar in 100 ml of water.
{*style:<b>PROCEDURE <b><b>Part 1- Setting the Gel </b></b> <b></b> </b>*} Clean and dry two mold chambers of an ice cube tray. Obtain the cooling agar solution as prepared by your instructor. Carefully pour this solution into each of the tray chambers. {*style:<b><b>Part 2- Building the Chamber {*style:<b> BIObytes | BIOtech Now. Three Mathematical Cultures John T. Baldwin Department of Mathematics, Statistics and Computer Science University of Illinois at Chicago The title is inspired by the famous discussion of `two cultures' by C.P. By a Mathematics Educator I mean a person, usually but not exclusively holding a Ph.D. in Mathematics Education, whose primary intellectual activity is the understanding of how mathematics is learned and transmitting this understanding to others.
Several subcultures are being ignored in this discussion. My own background is predominantly that of a research mathematician. During my work with the high schools I have observed that a number of misunderstandings were caused by people with different backgrounds using the same words is quite different ways or having different expectations of the normal way that things are done. Attitudes to Mathematics We analyze below some of the different views of mathematics of the different groups. Attitudes towards teaching Professional situation.
Center for BioMolecular Modeling. Deciphering the Genetic Code: M. Nirenberg. Office of NIH History. Federal Bureau of Investigation - Kids' Page. TEA Introduction to Biotechnology Project. Instructional Media. Using Parker Brother’s game CLUE to learn about DNA Fingerprinting. Updatkit_descr. New4index. Enzyme Amylase Action on Starch. Immunoassay with forensic twist. SciVee | Making Science Visible. NIH Photo Galleries. Video Tutorials.