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Why are crystal violet agar 7.5 sodium chloride agar considered selective media?
Wiki User
∙ 13y ago
7.5% NaCl inhibits growth of certain bacteria. This type of selective media allows for the growth of Staph. A high concentration of NaCl alters the osmotic balance between the media and the bacterium, NaCl plasmolyzes the bacterium due to the hypertonicity of the medium. The circular shape of Staph allows it to better resist plasmolysis. Crystal Violet is a dye that inhibits the growth of certain Gram-positive bacteria, it does this by binding to the thick peptidoglycan layer preventing cross-linking and thus preventing cell growth.
Wiki User
∙ 13y ago
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What is the botanical name of salt?
there won't be any botanical name for common salt as it is related to chemistry, and it would only have a chemical name-sodium chloride
Is Sodium lactate agar selective?
yes, it selects for microbes that can grow in a sodium environment and ferment lactate
What element is added to salt?
chloride- sodium and chloride make salt and its symbol is NaCl.
What are the ingredients of nutrient broth?
peptone, beef extract, yeast extract, sodium chloride peptone, beef extract, yeast extract, sodium chloride
Normal sodium level?
The normal concentration of sodium chloride in blood is 150 mmol/L.
What is the shape of a sodium chloride crystal?
Sodium chloride crystallizes into cubes.
Why are Sodium Chloride Crystals cubed shaped?
It is a sodium chloride crystal.
Is sodium chloride a white powder?
A pure crystal of sodium chloride is transparent.
Why does a sodium chloride crystal not conduct electricity?
Solid sodium chloride is not an electrolyte.
Why does a mixture of sodium chloride and water conduct electricity but sodium chloride crystal does not?
Sodium chloride solution is an electrolyte containg ions as Na+ and Cl-. Sodium solid crystal is not an electrolyte, is not dissociated.
Are sodium chloride and diamond isomorphic?
The crystal system is cubic for sodium chloride and diamond.
In a crystal of sodium chloride each sodium ion is attracted to what?
chloride ions surrounding it
What tipe of crystal is sodium chloride?
Yes it is a crystal. It is a lattice compound.
Is sodium chloride a crystalline structure?
its not a crystal its an electrotastic compound formed by ionic particles by: Mr chemistry teachear- doctor tembleque Alternate answer: yes, it is a crystal, specifically face-centered cubic.
How many formula units of sodium chloride are present in a unit cell of sodium chloride crystal?
8
Is Sodium chloride do they conduct electric city?
Sodium Chloride solution (dissolved in water) conducts electricity, and molten Sodium Chloride conducts electricty, but dry crystal Sodium Chloride does not conduct electricity.
What force would you expect between sodium ions and chloride ions in a crystal of sodium chloride?
(+)--(-) positive and negative
