By: Jon Clark
The short answer is that prokaryotes are bacteria. Bacteria are unicellular - that is they are only ever one cell not lots of cells working together like in a human for example. Bacterial or prokaryotic cells are different in a number of ways from what...
By: Janet Grischy
All fungi are useful, in the sense that they fill their niche and perform their role in a world that is infinitely interconnected. However, when someone says useful fungi, they usually mean classes of fungi that are directly helpful to humanity, in agriculture, medicine, or...
By: Erich Rosenberger M.D.
The world of microbiology is a virtual zoo of very small, mostly single-celled organisms. Since the invention of the microscope, scientists have spent entire careers peering in to the world of bacteria, viruses, and fungi. In order to make sense of the huge variety of...
By: Erich Rosenberger M.D.
The world of microbiology is a fascinating universe. There are thousands of different species of life-forms that can only be seen with the aid of a microscope. Even with a microscope, these tiny creatures are so foreign looking that they could easily be confused with...
What type of genetic material does a virus have?
By: Tami Port MS
Viruses are simple, yet very successful non-living, infectious agents. These efficient parasites make a living commandeering the cells of organisms and turning them into virus factories. A virus undertakes this monumental invasion with very little of its own equipment. So, what does it take to...
Making sense of the genetics of RNA viruses
By: Tami Port MS
Viruses are primarily classified by their genetics, the type of nucleic acid that they possess. And nucleic acids show a great deal of variability among viruses. Not only can a viral genome be made of either DNA or RNA, it can be single-stranded DNA, double-stranded...
By: Alison Bowler
Bacteria are divided into two groups the Eubacteria and the Archeobacteria. All medically important bacteria are Eubacteria. The first step in classifying members of the Eubacteria is based on their shape cocci are round, bacilli are rod shaped, Vibrios look like commas and spirilli are...
By: Alison Bowler
There are millions upon millions of bacteria in our world. The microbiologist searching for in any particular bacterium uses a number of techniques to distinguish one species from another. The starting point for most bacteriologists is the gram stain. This simple differential staining technique involves...
By: Darian Peters
Bacteria are potentially pathogenic single-celled microorganisms that can also be found in forms that are free living as well as some that are of positive benefit to other organisms or at least benign in their interactions. They come in a variety of morphologies or shapes...
By: Darian Peters
There are a vast number of species of the unicellular organisms known as bacteria. They can inhabit any habitat on the planet from the soil to radioactive waste, for example, and make up much of the planet's biomass. Some of them can be pathogenic to...

 

1 18 19 20 21 22 33