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Where does the solidifying agent agar come from?
Agar is derived from seaweed, specifically from the cell walls of red algae. It is extracted by boiling the seaweed and then purifying and drying the resulting gelatinous substance.
Why have zone inhibition?
It is the area on an agar plate where growth of a control organism is prevented by an antibiotic usually placed on the agar surface. If the test organism is susceptable to the antibiotic, it will not grow where the antibioitic is.
What organism yellow green on blood agar?
Streptococcus pneuomoniae When this organism is tested on a blood agar plate it's colonies will be surrounded by a greenish discoloration due to alpha-hemolysis.
What continent is agar on?
Agar is not a continent; it is a gelatinous substance derived from red algae, commonly used as a culture medium in microbiology and as a thickening agent in food. Red algae, from which agar is extracted, can be found in oceans around the world, particularly along the coasts of Asia, where it is widely harvested.
What group of algae produce agar?
Agar is produced primarily by red algae, specifically from the genera Gelidium and Gracilaria. These algae contain a gelatinous substance that is extracted and processed to create agar, which is widely used as a gelling agent in food, microbiological culture media, and various industrial applications.
Does carrageenan have algy in it?
it is made out of algae, its extracted lik agar-agar or alginates.
Lactose fermentation mac conkey test which color indicate a positive test?
MacConkey agar is yellow (due to the lactose in the agar). When an organism consumes the lactose, the agar turns purple. Purple indicates a positive test. If the organism doesn't use the agar, the agar stays yellow.
If an organism can grow on both a nutrient agar and a MacConkey Agar on which would you expect it to grow better?
You would expect the organism to grow better on nutrient agar because it is a general-purpose medium that supports the growth of a wide range of organisms. MacConkey agar, on the other hand, contains inhibitors that selectively inhibit the growth of Gram-negative bacteria, so the organism may not grow as well on this medium.
Where does the solidifying agent agar come from?
Agar is derived from seaweed, specifically from the cell walls of red algae. It is extracted by boiling the seaweed and then purifying and drying the resulting gelatinous substance.
What organism yellow green on blood agar?
Streptococcus pneuomoniae When this organism is tested on a blood agar plate it's colonies will be surrounded by a greenish discoloration due to alpha-hemolysis.
Why have zone inhibition?
It is the area on an agar plate where growth of a control organism is prevented by an antibiotic usually placed on the agar surface. If the test organism is susceptable to the antibiotic, it will not grow where the antibioitic is.
What is an agarose?
An agarose is a polymeric cross-linked polysaccharide extracted from the seaweed agar and used to make gels.
What is the principle of agar diffusion method?
The principle of agar diffusion method is based on the diffusion of an antimicrobial agent from a sample into an agar medium containing a test organism. The size of the zone of inhibition that forms around the sample is used to determine the effectiveness of the antimicrobial agent against the test organism.
What conclusions may be drawn if no growth appeared on MacConkey agar and emb agar after inoculation of the media and an incubation period?
The conclusion drawn if no growth appeared on MacConkey agar and EMB agar after inoculation of the media and an incubation period could be the bacteria used was possibly a Gram positive non-enteric sample.
What continent is agar on?
Agar is not a continent; it is a gelatinous substance derived from red algae, commonly used as a culture medium in microbiology and as a thickening agent in food. Red algae, from which agar is extracted, can be found in oceans around the world, particularly along the coasts of Asia, where it is widely harvested.
What group of algae produce agar?
Agar is produced primarily by red algae, specifically from the genera Gelidium and Gracilaria. These algae contain a gelatinous substance that is extracted and processed to create agar, which is widely used as a gelling agent in food, microbiological culture media, and various industrial applications.
The energy required for life processes must be extracted from an organism's?
environment
