By: Erich Rosenberger M.D.
Amino acids are fundamental building blocks for proteins. Proteins are made of long chains of amino acids. Sometimes these chains can be thousands of amino acids long. They twist and turn, with different parts of the amino acids interacting with each other, ultimately forming the...
Stem cells explained
By: Jon Clark
Stem cells - they are in the news and have been for a few years now - this shouldn't be a surprise because they offer the hope of a cure to currently incurable medical conditions such as Parkinson's disease and spinal injuries. Also sufferers of...
By: Tammy T
Various TV shows and popular fiction in the last five, ten years have brought the subject of forensic science into the public eye. However, what many think is forensic science is merely limited to the Hollywood interpretation of it, with forensic scientists playing the role...
By: Janet Grischy
Bacteria are prokaryotes, one of the three great classes of life. Their cells have no nuclei, and generally lack organelles, small sub-units bound in membranes. They are about a tenth the size of the eukaryotic cells found in plants and animals, on average, though a...
What are starches?
By: Damilola Owoyele
Starch is an age-old substance that can be traced down the history line. Romans use it to augment their looks as a cosmetic; Egyptians being more technical used it as paste to stiffen weaved clothes and as adhesive; Chinese were literal about its use to...
The role of algae in the ecological lifecycle
By: Jess Howe
Algae, whether red or green, have an important role in the ecosystem of this world. They start out in our oceans, are as food sources to the smallest of creatures who then get eaten by larger and larger creatures exponentially, till their influence gets to...
Differential staining of bacteria using known controls
By: Tami Port MS
There are many staining techniques that can be used to view bacteria. Simple stains employ only one dye, and provide information limited to cell shape and grouping. The use of differential stains is more complex. Differential protocols employ a series of dyes to distinguish different...
Tests for identification of bacteria: Differential staining, specialized media and API-20E
By: Tami Port MS
Gram, Acid Fast and Endospore stains; MacConkey's, Mannitol Salt, and Blood Agar media as well as the API-20 test strip all provide information to identify microbes. Most of these are procedures taught in introductory microbiology courses, and are useful in sorting bacteria into broad categories...
The role of bacteria in making cheese
By: Jess Howe
Bacteria's role in cheese making is important. Those little creatures that sometimes give us infections are also friendly at other times, we know - just how friendly is about to be shown, as I talk about two of my favorite things in the world:...
Blood agar (BPA) differential bacterial growth medium
By: Tami Port MS
Blood Agar is a bacterial growth medium that can distinguish normal from pathogenic bacteria based on the effect of bacterial hemolytic enzymes on red blood cells. * What Is a Growth Medium? * A growth medium (plural: media) is a mixture of nutrients, moisture and...

 

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