Definition

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What is Microorganism Definition?
July 4, 2017

What is Microorganism Definition?

Microorganisms are microscopic, living, single-celled organisms such as bacteria. Ubiquitous throughout the world, microorganisms play a vital role in supporting and maintaining nature and life. The vast majority are beneficial: They keep nature clean by removing toxins from water and soil, and degrade organic matter from dead plants and animals. In the human…

Definition of Microorganisms
August 20, 2016

Definition of Microorganisms

7] cfu/g of microorganism colonies have grown in each biofilter cassette.A nearly ten-fold increase in AFLP citations in the scientific literature in the past five years is an indication of its wide acceptance as a useful DNA fingerprinting technique in the plant science area and its growing use for identifying microorganisms in other areas.It s much easier to…

What is the Definition of Microorganisms?
July 18, 2016

What is the Definition of Microorganisms?

The number of species of bacteria and archaea is surprisingly small, despite their early evolution, genetic, and ecological diversity. Learning Objective Describe the concept of polyphasic species Key Points The differences in species concepts between the Bacteria and macro-organisms, the difficulties in growing/characterising in pure culture (a prerequisite…

Pathogenic Organisms Definition
May 29, 2017

Pathogenic Organisms Definition

Any microorganism capable of injuring its host, e.g., by competing with it for metabolic resources, destroying its cells or tissues, or secreting toxins. The injurious microorganisms include viruses, bacteria, mycobacteria, fungi, protozoa, and some helminths. Pathogenic microorganisms may be carried from one host to another as follows: Animal sources: Some organisms…

Cell Parts Definitions
October 22, 2016

Cell Parts Definitions

Encyclopaedia Britannica/UIG/Getty Images The cell nucleus​ is a membrane bound structure that contains the cell s hereditary information and controls the cell s growth and reproduction. It is the command center of a eukaryotic cell and is commonly the most prominent organelle in a cell. Distinguishing Characteristics The cell nucleus is bound by a double membrane…

Definition of capsule in Biology
June 25, 2017

Definition of capsule in Biology

In short: It can depend on your definition of encapsulation. any of the antigens, usually polysaccharide in nature, that are carried on the surface of bacterial capsules. The term K antigen is used for those that mask somatic (O) antigens. In general, capsule polysaccharides have complex structures and are produced by a the action of several enzymes, with the…