Hello
guys. Today, I would like to share about Microbial Groups. It is
based on size of population and not individual growth. The methods of
microbial reproduction are :
- Binary fission
- Budding
- Fragmentation
- Formation of spores
- Sexual reproduction
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Animal community in forest
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Microorganisms
will never grow as pure culture in the environment. Pure culture is
only can be made in the lab. Physical growth requirement include
light, temperature, pH and water activity. Chemical growth
requirements are water, carbon, nitrogen, phosphorus, sulphur, trace
elements (Mg, Cu, Zn etc) and the special growth requirement (e.g :
L-cysteine and iron are required by Legionella pneumophila).
There
are 2 major nutritional source which are energy source and carbon
source. Furthermore, the development of microbial communities include
3 key process :
- Selection strategies
- Succession
- Biofilms
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| K and r strategies |
Primary
succession by organisms in a habitat that is not previously inhabited
and secondary succession by organisms in a habitat already modified
by previous organisms. Types of succession are :
- Preemptive colonization
- Autogenic succession
- Allogenic succession
Climax
community is achieved when succession ends. Next, biofilms composed
of living, reproducing microorganisms, such as bacteria, that exist
as a community. It is formed when certain microorganisms adhere to
the surface of some object in a moist environment and begin to
reproduce. There are 2 types of biofilm which are simple biofilm
(microorgaisms attach and form a monolayer of cells) and complex
biofilm ( layers of microorganisms and the formation depending on
environment such as light, nutrients etc).
The
consequences of biofilms are :
- Dental caries
- Accelerate corrosion of pipes
- Slow the flow of water through pipelines
- Unavailable for attack by immune system
"Everything that you learn, you must have curiosity" "WHY? WHY?" Always discover~
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| "Bye!" |
