By: D. Vogt
Spontaneous generation and abiogenesis are a pair of theories involving the emergence of life from non-living material. The difference is that spontaneous generation is an obsolete theory of how certain forms of life commonly emerge from non-living matter, whereas abiogenesis is the ongoing study of...
What are prions?
By: D. Vogt
A prion is a little-understood type of abnormal protein molecule capable of spreading and damaging animal bodies, including humans, in a manner similar to a virus. The most well-known prion disease to date is mad cow disease, which in humans causes Creutzfeldt-Jakob disease. Prion stands...
The medical war on superbugs has only just begun
By: Laura Lamp King
Researchers at Cardiff University, the Health Protection Agency (HPA) and International colleagues reported finding a new gene, New Delhi metallo-beta-lactamase 1 (NDM-1), which alters bacteria, making them resistant to virtually all known antibiotics.Found largely in E. coli bacteria, the most common cause of urinary...
NASA's new life discovery may be extraterrestrial
By: Terrence Aym
Recently, the news media rushed to report on a NASA press conference that too many people yawned over. For the implications of what NASA discovered is monumental and will certainly change some of the science textbooks as well as the search for life in the...
By: M E Skeel
Fungi are something that few people notice, except for the occasional mushroom. Yet fungi are quite literally everywhere, but especially in soils. Soil is also something that most people don't notice. It is something under the ground, under the grass or under one's feet but...
By: M E Skeel
The smallest parasites in the world are viruses and prions. They cannot be seen with conventional light microscopes because they are so small (between about 10 to 200 millimicrons across - and a millimicron is 0.000001 millimeters). Only the invention of the electron microscope...
By: M E Skeel
Flagellates are single celled animals, protozoans, that are characterised by the presence of a whip-like flagellum, which they use for locomotion. Choanoflagellates are a subgroup which are distinguished by having a single flagellum surrounded by a collar of microvilli, which are tiny hair-like structures. Choano...
By: M E Skeel
Heliozoans are amoeboid protozoans. That is, they are single-celled organisms that move by the flow of their cytoplasm rather than by using oar-like cilia or whip-like flagellae. Heliozoa means sun-animals and they do resemble tiny suns for they are round with rays coming out in...
By: Omar Salvador
Species of microorganisms exhibit divergence in degrees of susceptibility to different antibiotics. In addition to this, an organism's susceptibility to a given antibiotic may change. This is especially true during treatment. For the most satisfactory results in treatment, a clinician has to know the identity...
Are viruses living organisms?
By: Omar Salvador
Viruses constitute a large group of infectious organisms which are much smaller than bacteria. They possess a common characteristic - that of being obligate intracellular parasites for the cells of the hosts they select. This means that viruses can grow and reproduce only if they...

 

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