How would you describe a microbial colony?
How would you describe a microbial colony?
A colony is defined as a visible mass of microorganisms all originating from a single mother cell, therefore a colony constitutes a clone of bacteria all genetically alike. In the identification of bacteria and fungi much weight is placed on how the organism grows in or on media.
What is a lobate colony?
1. Divided into lobes. 2. Lobe-shaped; denoting a bacterial colony with a deeply undulate margin.
What does a Punctiform colony mean?
Punctiform colonies are distinguished from circular colonies by their very small size. Spindle colonies are lens-shaped. 3. Elevation. There are no clear distinctions among raised, convex, and pulvinate.
What characteristics should pathogen colonies have?
These are the characteristics used to accurately and consistently describe the morphology of a bacterial colony:
- Size.
- Shape.
- Color (also known as pigmentation)
- Texture.
- Height (a.k.a. elevation)
- Edge (a.k.a. margin)
What is a microbial colony and how is one formed?
A colony is population of a single type of microorganism that is growing on a solid or semi-solid surface. Bacteria , yeast , fungi , and molds are capable of forming colonies. On a colonized solid surface, such as the various growth media used to culture microorganisms , each colony arises from a single microorganism.
Why is it important to identify bacterial colonies?
Observing colony morphology is an important skill used in the microbiology laboratory to identify microorganisms. Colonies need to be well isolated from other colonies to observe the characteristic shape, size, color, surface appearance, and texture. Another important characteristic of a bacterial colony is hemolysis.
What are the 3 types of colony shape?
Colony Morphology
| Shape | Margin (edges) | Elevation |
|---|---|---|
| Circular | Entire (Smooth) | Flat |
| Irregular | Undulate (Wavy) | Convex |
| Punctiform (tiny) | Rhizoid | Umbonate |
| Lobate | Raised |
What is an example of a colony?
The definition of a colony is a group of people who create a settlement in a distant land but remain under the governmental control of their native country or a group of similar animals that live together. An example of a colony was Massachusetts under British rule during the 17th and 18th centuries.
What is Butyrous?
(byū’ti-rŭs), Denoting a tissue or bacterial growth of butterlike consistency.
What are bacteria colonies?
Bacterial Colony Definition and Overview A bacterial colony is what you call a group of bacteria derived from the same mother cell. This means that a single mother cell reproduces to make a group of genetically identical cells, and this group of cells form a mass, which is known as a bacterial colony.
How are bacterial colonies different?
Colony morphology is a method that scientists use to describe the characteristics of an individual colony of bacteria growing on agar in a Petri dish. It can be used to help to identify them. A swab from a bin spread directly onto nutrient agar. Colonies differ in their shape, size, colour and texture.