Molecular Biology

  • What is Clostridium Tetani?

    Clostridium tetani is the bacterium that causes tetanus. It is usually found living in soil, animal intestinal tracts and animal manure. Humans can become infected when bacterial spores contaminate wounds.
    By Paul Arnold December 3, 2009 

  • Human Intestinal Parasites

    Parasites in the human body undermine physical and mental health. Lack of proper hygiene is the number one cause of the spread of various intestinal parasites. Once they enter the body, these human parasites can be hard to dislodge. Researchers keep trying...
    By Sonal Panse December 2, 2009 

  • What Are Noroviruses?

    The norovirus genus is responsible for many outbreaks of gastroenteritis worldwide. In this article I take a look at the structure and evolution of the different norovirus strains, and norovirus infection, treatment and prevention.
    By Ollie Hicks November 30, 2009 


  • Examples of Anaerobic Bacteria

    Anaerobic bacteria survive and grow in environments with little or no oxygen and include strains that cause botulism and tetanus. This article is an overview of the types of anaerobic bacteria, followed by a few examples.
    By Paul Arnold November 29, 2009 

  • The Structure and Function of the Cell Nucleus

    The eukaryotic cell nucleus is the membrane bound home to most of a cell's complement of genes. It's the information centre of the cell - its brain - and governs all of its metabolic functions.
    By Paul Arnold November 29, 2009 

  • DNA Structure: Nucleotide versus Nucleoside

    They're almost spelt the same, nearly sound the same and are key components of the DNA structure. Both are needed to create and replenish cells, but don't be confused by the terms nucleotide and nucleoside.
    By Paul Arnold November 28, 2009 


  • Guide to a Prokaryotic Cell

    Small they may be, but there's a whole world of activity going on inside prokaryotic cells. Prokaryotic structure is very different to that of eukaryotic cell structure, they lack membrane-bound organelles for example. So let's dive inside for...
    By Paul Arnold November 27, 2009 

  • What Good is a Vacuole?

    Tucked away inside the cytoplasm of plant and animal cells are little pockets called vacuoles. More than just empty spaces, these tiny membrane-bound organelles carry out a number of important functions that help to keep the cells that surround them...
    By Paul Arnold November 27, 2009 

  • Guide to Plant Cell Structures: The Chloroplast

    Chloroplasts are the energy powerhouses of plant cells. They absorb sunlight and along with water and carbon dioxide convert the whole lot into plant fuel - sugars. The by-product of this process is oxygen, which comes in handy for humans.
    By Paul Arnold November 24, 2009 

  • How Does a Bed Bug Bite?

    Bed bugs have been making a comeback, so once again there is an arthropod assault infesting urban areas. Fortunately, these tiny critters don't cause diseases, but they are highly irritating when they feed on human blood. So how do they do it?
    By Paul Arnold November 24, 2009 
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