We generally refer tobacteriajust like that:bacteria. But note thatbacteriais technically the plural form of the singularbacterium.(You can blame that on Latin.) You might need to usebacteriumwhen discussing the specific kind of bacteria that causes a disease, such asYersinia pestis, which causes...
The DNA in prokaryotes is contained in a central area of the cell called the nucleoid, which is not surrounded by a nuclear membrane. Many prokaryotes also carry small, circular DNA molecules calledplasmids, which are distinct from the chromosomal DNA and can provide genetic advantages in specific...
So, in general terms, anaffixdescribes most letters added to the beginning or end of aroot word(a word that can stand alone without an affix) to change its meaning. In that definition above, whenim-is added to the root wordpossible, it changes the meaning of the word. Three types of ...
) A tuft or brush of hair on the knees of some species of antelopes and other animals; -- chiefly used in the plural. Kneebrush (n.) A thick mass or collection of hairs on the legs of bees, by aid of which they carry the collected pollen to the hive or nest; -- usually in ...
Its interesting how often basic principles carry through lots of different things in nature. For instance, the coccus described in this article has a round flat shape giving it the most possible surface area. This is a biological advantage because it allows the bacteria to take up more nutrients...