Saturday, December 7, 2013


                                Bacteria
              
                Hello guys and welcome back to my latest blog post about the microscopic world of bacteria.:)


               Let's start off with what bacteria really is. Bacteria are microorganisms that are prokaryotic( as mentioned in my previous blog posts). The cell structure contains:

  • pili- they have hair like structures that can transfer DNA to another bacteria.
  • basal body- which can anchor the base of the flagellum and allows it to rotate.
  • capsule- a layer in the outside of the cell wall.
  • cell wall- a layer membrane outside of the plasma membrane LINK 
  • cytoplasm- a jelly like substance that contains ribosomes and genetic material are located
  • flagellum- a long whip like structure in which it allows the bacteria to move.
  • plasma membrane- a membrane located inside the cell. It generates energy and transports chemicals
  • ribosomes- small organelles rich in RNA.



Many bacteria come in all different shapes and sizes. The can be rod shaped, spiral shaped, or sphere shaped. The spiral shaped ones usully look like party streamers. They can move by using their whole body . Rod shaped bacteria look like bars. They move by using their flagellum or cilia. Finally, sphere shaped bacteria look like spheres and they use the same movement as the rod shaped ones.


File:Spirillum.jpg

Bacilli Bacteria






               bacilli




spirilla



Also fission is when two bacteria reproduce sexually or asexually (as mentioned in my previous posts) and split into more bacteria.





Binary fission


fission






How bacteria obtain food and energy is thet they are heterotrophic, which means that they get food from other organisms. They can trap other organisms. They can make their own food(autotroph) by using photosynthesis. They can even make food and energy using the power of the sun.





You probably might be wondering about why eubacteria and archaebacteria are classified differently. Because they have different chemicals and RNA. Eubacteria can make their own food and they can add oxygen to the atmosphere.they can't live in extreme environments. Archaebacteria can consume or make their own food. They can survive in hostile environments like volcanos, acidic environments and deep ocean vents. Some of them can live inside of you. They can help break down the food in your intestines.





Well, see ya later.





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