World first: How scientists have created artificial life
By: Terrence Aym
After decades, the dream of scientists (and of a few mad scientists) has come true: U.S. researchers have announced the successful creation of artificial life. Led by Dr. Craig Venter, a visionary and billionaire, the research team succeeded in creating "life from scratch."...
Microscopic details of cell membrane
By: Catherine Boudreau
Cell membranes are crucial to cell proliferation and survival. The cell membrane is not only a protective barrier that surrounds the cell but it also allows passage of essential molecules to and from the cell. The cell membrane is made of two key components which...
Function of phospholipids
By: Dr. Bryan Katz
Phospholipids can be classified according to several schemes; however, I find it useful to think of them in terms of structural and functional categories. Structural phospholipids comprise the majority of lipid bilayers found in eukaryotic cell membranes and organelles as well as internal membrane systems...
Overview of the function of the hormone insulin
By: Dr. Bryan Katz
Insulin is a peptide hormone produced by beta cells in the islets of Langerhans, which comprise the endocrine pancreas. Unlike most other hormones, which directly or indirectly elevate blood glucose, insulin is one of the few hormones that lowers blood sugar levels in addition to...
World first: How scientists have created artificial life
By: Ray Burke
Craig Venter: Man God? A scientific team led by Dr. Craig Venter of the J Craig Venter Institute in Maryland and California has succeeded in developing the first synthetic living cell. The scientific landmark used cutting-edge technology over fifteen years to construct a bacterium’s...
Cell junctions in human beings
By: Dr. Bryan Katz
Cell junctions in humans, as well as in all multicellular organisms, serve two essential but opposite purposes. First, they allow materials to travel freely from one cell to another, as with gap junctions. In contrast, another set of structures called desmosomes are found in desmosomal...
Ribosomes: an explanation
By: Nicole Perkes
Protein Synthesis: A brief overview of ribosome function and a new regulatory mechanism Ribosomes are complexes that catalyze the synthesis of all proteins in all organisms. The ribosome is composed of messenger RNA (mRNA) that carries the code for the protein, the small subunit, the...
Stem cells as a solution to hair loss
By: Lea Miller
The incredible potential of stem cells derives from their ability to develop into any kind of cell the body needs. Scientists are now looking at ways that stem cells may be able to help those with hair loss. Hair grows in cycles, routinely going through...
By: Wayne Cracknell
Cells are one of the most important things on Earth today, and have been one of the most important things on Earth for a very long time. Without cells, to put it simply, organisms just would not exist at all. In any living organism, cells...
The basics of gel electrophoresis
By: Billy Hawkins
Background of Gel Electrophoresis Gel Electrophoresis is a technique used to separate molecules by their size and electric charge. It can be used to separate different lengths of DNA. The DNA is separated into fragments that can be separated in a gel on the basis...

 

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