The BiotechnologyEducation Company
BactoBeads™ are non-pathogenic, freeze-dried microbes (bacteria and lower eukaryotes) that are easily cultured for use in the classroom. Each bead contains microorganisms, buffer, salts and nutrient broth in an instantly soluble pellet.
Five Viruses You Should Know About
In the late 1800’s, scientists were working to characterize the means through which microbes caused disease. While certain diseases like cholera, tuberculosis and anthrax could be explained by the presence of specific bacteria, other diseases, like rabies, could not. As such, these agents were considered to be a “biological chemical”; accordingly, they were named virus, from the Latin word referring to poison or other venomous compounds.
Tagged on: Virus, Biotech Basics
Lighting Up Life With GFP
Meet the luminescent Aequorea victoria. This jellyfish lights up the eastern Pacific Ocean with a green fluorescent signal. Producing this signal is a two steps process. First a blue light is created through an interaction between released calcium (Ca2+) and the protein aeqorin. Then the blue light is turned green by a protein known as Green Fluorescent Protein (GFP). Both proteins have become powerful tools in biotechnology.
Tagged on: Genes, GFP, Transformation, Cell
Exploring Chromosomal DNA
The nucleus is a dense organelle that contains the genetic material of a cell. How dense? The human genome is around 3 billion nucleotides and the average length of a nucleotide is 0.6 nanometers, so stretched out the DNA in a cell would be around 1.8 meters or 5 ft. (Here’s the math: 3.0 × 109 x 6.0 × 10-10 meters = 1.8 meters).
Tagged on: DNA, Science, Cell
Edvotek Road Trip - NSTA Area Meeting in Richmond, VA
Last week, we kicked off our busy fall conference schedule with the NSTA Area Meeting in Richmond, VA. Richmond is just a stone’s throw away from our headquarters in Washington, D.C., so we packed up our truck and got on the road.
Tagged on: DNA, DNA Fragments, Genes, NSTA, Polymerase Chain Reaction, STEM, Workshop
DNA Barcoding: Identifying Organisms at the Molecular Level
How would you identify all the species in the picture? You could consult a field guide, ask a mycologist (a person who specializes in fungi), or you could sequence its DNA. This last choice is becoming increasingly popular and is known as DNA barcoding. DNA barcoding uses short polymorphic segments of DNA to classify an organism as belonging to a particular species.
Tagged on: DNA, DNA Barcoding, DNA Fragments, DNA Sequencing, Fungi, Genes, Nature, Organisms, Polymerase Chain Reaction, STEM, Intermediate, Advanced
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