Definition of Bacteria
A good definition of bacteria is that, they are organisms, microscopic in nature, they are unicellular and reproduce asexually. They do not contain steroids, cholesterol, mitosis or meiosis and doesn’t have membrane bound nucleus or organelles e.g chloroplasts and mitochondria. They’ve different shapes such as rods, spheres, spirals and so on. They are an ancient form of life and most of them have spores that are resistant to dryness e.t.c
It’s interesting how bacteria can multiply given a favorable condition. For instance, what happens is that under good growing condition, a new cell wall grows at the center and forms two daughter cells with the same genetic material as the mother cell. Amazingly, in a span of just twenty minutes, the two daughter cells get divided into four. Basically this goes on increasing in a pattern of 1, 2, 4, 8, 16, 32, 64 and so on. (more…)