What Are Microorganisms
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- Date Submitted: 03/19/2011 02:04 PM
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What Are Microorganisms?
Microorganisms (Latin micro = small) are living beings so small (< 40 µm or 0.04 mm) that they are not visible by the naked eye. Microorganisms related to human health include certain bacteria, viruses, fungi and parasites.
Ask a Doctor Online Now.
Synonyms: microbes, germs, bugs.
Types of Microorganisms
Microorganisms can be, according to their characteristics, divided into several groups:
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• bacteria, viruses, certain fungi and parasites
• pathogenic (capable of causing disease), non-pathogenic, and opportunistic (causing disease when they have an opportunity, like in people with low immune system)
• acellular (without cell, like viruses), unicellular (bacteria, yeasts and certain parasites), or multi-cellular (molds)
1. Bacteria
Bacteria are unicellular organisms, about few microns in size (1 micron (µm) = 1/1,000 of a millimetre), consisting of DNA, cytoplasm, structures needed for metabolism and reproduction, cell membrane, cell wall and capsule (Picture 1). Certain bacteria use flagella, tail-like appendages, to propel themselves.
Picture 1. Bacterial structure
(source: Wikimedia)
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Bacteria multiply asexually by dividing into two daughter cells (Picture 2).
Picture 2. Bacteria multiply asexually, by...
Microorganisms (Latin micro = small) are living beings so small (< 40 µm or 0.04 mm) that they are not visible by the naked eye. Microorganisms related to human health include certain bacteria, viruses, fungi and parasites.
Ask a Doctor Online Now.
Synonyms: microbes, germs, bugs.
Types of Microorganisms
Microorganisms can be, according to their characteristics, divided into several groups:
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Clostridium difficileToxB
RecombinantDiagnostic control reagent
www.pfenex.com
Get Rid Of Vitiligo Today
Voted # 1,Tested & Proven VitiligoTreatment By Organic Care Australia
www.VitiligoOrganics.com
Got a Virus?
Let a Nerd Clean Up your PCNerds come to you!
www.dialanerd.co.za
Ask a Doctor Online Now
18 Doctors Are Online.Ask a Question, Get an Answer ASAP.
Health.JustAnswer.com
• bacteria, viruses, certain fungi and parasites
• pathogenic (capable of causing disease), non-pathogenic, and opportunistic (causing disease when they have an opportunity, like in people with low immune system)
• acellular (without cell, like viruses), unicellular (bacteria, yeasts and certain parasites), or multi-cellular (molds)
1. Bacteria
Bacteria are unicellular organisms, about few microns in size (1 micron (µm) = 1/1,000 of a millimetre), consisting of DNA, cytoplasm, structures needed for metabolism and reproduction, cell membrane, cell wall and capsule (Picture 1). Certain bacteria use flagella, tail-like appendages, to propel themselves.
Picture 1. Bacterial structure
(source: Wikimedia)
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Clostridium difficileToxB
RecombinantDiagnostic control reagent
www.pfenex.com
Get Rid Of Vitiligo Today
Voted # 1,Tested & Proven VitiligoTreatment By Organic Care Australia
www.VitiligoOrganics.com
Got a Virus?
Let a Nerd Clean Up your PCNerds come to you!
www.dialanerd.co.za
Bacteria multiply asexually by dividing into two daughter cells (Picture 2).
Picture 2. Bacteria multiply asexually, by...