Thursday, January 26, 2012

What is Motility in prokaryotic cells

Have you ever wondered how cells move around?  The process of a cell moving around is called Motility.  In the prokarytoic cells they move around in 3 different ways:

  1. Flagella is the first way they can move around.  Flagella are long and thin, they extend past the surface and their glycocalyx.  They help propel the cell body through its environment.  There are 4 different types of flagella.  Monotrichous, amphitrichous, lophotrichous, and peritichous.  

2.  Fimbriae is the second form in which they move.  Fimbriae are sticky, shorter and abundant.  The    stickiness of their bristles help them to adhere to each other and environment.  Also, when in the biofilm they play an important role by conducting electrical signals among the cells in the biofilm.  Thus, helping in communication.  

3.  Pili does not necessarily move the cell around, but it does help in a different way.  Pili are mid-length between flagella and fimbriae.  They are also know as conjugation pili because they help mediate the transfer of DNA from one cell to another.  







Wednesday, January 18, 2012

Definition of Prokaryotic, Eukaryotic, and Abiogenesis

Welcome fellow bloggers, hope all of you are doing well! As stated before i will be doing this blog as a way to help us all learn a little something about Microbiology.  This week we will be describing what distinguishes prokaryotic from eukaryotic. 
  
 Prokaryotic:                                                                         Eukaryotic:                                                       
lacks a membrane-bonded organelles           Has a true nucleus 
unicellular                                                          Membrane-bonded organelles
DNA/Chromosomes are circular                    Unicellular/multicellular
Have ribosomes                                                DNA linear
Have cell membrane                                         
Have cell walls





Spontaneous Generation (abiogenesis):
A theory, widely held in the 19th century and earlier but now discredited, stating that living organisms could arise directly and  rapidly from nonliving material.



Wednesday, January 11, 2012

Introduction of my knowledge

     Hello fellow viewers, this will be my personal blog about my interesting class, Microbiology.  Here i will be updating you guys on the knowledge i learn during my class.  I will write about my interesting encounters, my bone chilling investigations, some admirable reflections and of course a few terms for you guys to further understand.  I hope to make this as simple and mind blowing as possible.