0
What else can I help you with?
Whats the difference between inoculation and contamination?
Five I's 1. Inoculation: The sample is placed into a container of sterile medium that provides microbes with the appropriate nutrients to sustain growth. 2. Incubation: An incubator can be used to adjust the proper growth conditions of a sample. 3. Isolation: The end result of inoculation and incubation is isolation of the microbe. 4. Inspection: The cultures are observed for obvious growth characteristics that could be useful in analyzing the specimen contents. 5. Identification: Determine the type of microbe, usually to the level of species.
How is SIM medium used to detect motility?
SIM agar may be used to detect motile organisms. Motility is recognized when culture growth (turbidity) of flagellated organisms is not restricted to the line of inoculation. Growth of non-motile organisms is confined to the line of inoculation.
If sim medium was used for motility determination for Proteus vulgaris what noticeable change to the medium will be observed?
A noticeable change in the medium due to Proteus vulgaris motility would be the presence of diffuse growth radiating from the point of inoculation, resulting in a fuzzy or feathery appearance on the surface of the agar. This motility pattern is characteristic of Proteus species, which exhibit swarming motility on semisolid media like SIM medium.
What are the differences between streak plate technique and pour plate technique?
Streak Plate:Pure colonies of bacterial or other microorganisms can be obtained on petri dishes by streak plate. The microbial mixture is transfered to the edge of an agar plate with an inoculating loop or swab and then streaked out over the surface in one of several patterns. After the first sector is streaked in dish, the inoculating loop is sterlized and an inoculum for the second sector is obtained from the first sector. The same is done for third and fourth sector. Thus this is a dilution process. Eventually, very few cells will be on inoculating loop, a single cells will drop from it as it is rubbed along the agar surface. These develop into seprate colonies.Pour Plate:Extensively used with procaryotes and fungi, a pour plate also can yield isolated colonies. The original sample is diluted several times to reduce the microbial population sufficiently to obtain separate colonies when plating. Then small volumes of several diluted samples are mixed with liquid agar that has been cooled to about 45oC and the mixture are poured immediately into sterile culture dishes. Most bacteria and fungi are not killed by a brief exposure to the warm agar. After the agar has hardened each cell is fixed in place and forms an individual colony.
What kind of specimen can be observed under interference microscope?
Specimens that are transparent and have varying refractive indices, such as biological samples like cells and tissues, can be observed under an interference microscope. The microscope uses the interference of light waves passing through the specimen to create high-contrast images with detailed information about the sample's optical properties.
What condition can chemical properties be observed?
Chemical Properties can be observed only when substances in a sample of matter are changing into different substances.
Properties can be observed without chemically changing matter?
Physical properties such as color, shape, size, density, and state of matter can be observed without changing the chemical composition of the substance. These observations help identify the substance based on its characteristics.
What conditions may change observed properties?
enthalpy
What chemical properties that can be observed?
every thing around you.
What Properties Can Be Observed Without Changing A Substance's Chemical Compositionion.?
Physical properties such as color, odor, density, melting point, boiling point, and solubility can be observed without changing a substance's chemical composition. These properties depend on the structure and arrangement of the molecules within the substance and can be measured or observed through physical means.
What are properties that can be observed with the five senses that do not change the object?
Properties such as shape, size, texture, and color can be observed with the five senses and generally do not change the object itself. These properties are inherent to the object and remain constant regardless of how they are perceived.
Can the chemical properties of a substance be observed without changing the substance?
physical properties
What do physical properties means?
Physical properties of matter can be observed and tested. They include properties such as color, length, volume, odor, and density.
Why do we study physical properties first?
Physical properties can be observed or measured without changing the composition of matter.
Are properties that can be observed or measured without changing a substance into a new substance?
Yes, these are thy physical properties of substances.
Name 5 physical properties of matter that can be observed?
There are many different physical properties of matter that can be observed. Consistency, color, and texture are just 3 properties.
When can chemical properties be observe?
chemical properties can be observed only when the substances in a sample of matter are changing into different substances
