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Primary stain: carbol fuchsin will leave the acid fast cells red, as it can penetrate the lipoidal (thick waxy) shell of the acid fast shell. Counterstain: methylene blue will leave the non-acid fast cells blue. So you should have red and blue.
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∙ 14y ago
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∙ 12y agoSome bacteria, particularly the mycobacterium, have cell walls which contain a wax-like lipid, mycolic acid, which makes it difficult for Gram staining reagents to penetrate the cells. For this reason, special stains and procedures are used. These stains penetrate the walls and retained even if the bacteria are treated with a strong decolorizing by acid alcohol and do not retain the carbolfuchsin stain are called non acid-fast.
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∙ 7y agoExamples are:
- Mycobacteria (all species including Mycobacterium leprae)
- Nocardia
- Cryptospordium parvum, isospora, cyclospora cysts
- Legionella micdadei
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∙ 7y agoMycobacterium tuberculosis is an acid fast bacteria, which can form acid-stable complexes when certain arylmethane dyes are added. All species of mycobacteria have ropelike structures of peptidoglycan that are arranged in such a way to give them properties of an acid fast bacteria. The outer cell envelope of the bacteria that causes tuberculosis, Mycobacterium tuberculosis, is rich in fatty molecules called lipids. This gives the bacterial cell an unusual waxy exterior. These lipids may also play a role in conferring drug resistance to the bacteria. This waxy wall is what makes them acid fast. They are neither Gram + or Gram - as a result, too.
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∙ 10y agowhat is the struture difference between acid fast and non-acid fast species and how is it different
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∙ 13y agoSome Bacteria Are Resistant To Gram Staining But Acid Fast Bacteria Are Identified By Using Acid Fast Stain.
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∙ 12y agoMycolic Acid
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∙ 14y agodefenition?
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∙ 10y agonothing
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Why do you use iodine to stain a cell?
Iodine stains starch contained in cells. Iodine is also used to distinguish between Gram negative and Gram positive bacteria. The Gram stain contains iodine.
What is the voltage of a galvanic cell made with silver an nickel?
The voltage of a galvanic cell is the difference between the half cell potentials for the two reactions. For silver and nickel, this is about 1 volt.
Which of these would BEST describe what would happen to a cell in a time of low nutrient supply?
The cell's growth would slow down significantly, leading to longer periods of time between cell division.
What allows electrons to flow between electrodes in an electrochemical cell?
The difference in reactivity between two metals is what causes the electron flow, or voltage. It is facilitated by setting up a Galvanic cell, with two electrodes in solution connected by a copper wire (for electron flow) and a salt bridge (for balancing charges between electrodes.)
What is the difference between osmolarity and tonicity?
Tonicity refers to the relative concentration of solute particles inside a cell, with respect to the concentration outside the cell. Osmolarity refers to the movement of water from the inside to the outside of a cell, and vice versa
What features can be used to distinguish between an animal cell and a plant cell?
Plant cell has definite shape while animal cell has irregular shape.
What characteristics can help you easily distinguish between the animal kingdom and the plant kingdom?
cell structure
What featurns can be used to distinguish between an animal cell and a plant cell?
The major differences are the cell wall in the plant cell is not present in the animal cell, the other major difference is that an animal cell has no permanent vacuole.
How could you readily distinguish between neurons and columnar epithelial cell?
By the chromosome that leaves a color imprint on the columnar epithelial cell and the neuron will not have that spotted color on it.
On the basis of gram reaction only can you distinguish between staphylococcus and streptococcus?
If the Gram stain is properly done, and based on color alone: - you CANNOT distinguish between Staphylococcus (positive/purple) and Streptococcus (positive/purple) - you CAN distinguish between Staphylococcus (positive/purple) and Neisseria (negative/red) - you CANNOT distinguish between Escherichia (negative/red) and Proteus (negative/red) - you CAN distinguish between Escherichia (negative/red) and Bacillus (positive/purple) Gram positives will stain purple because of the retention of the dye (crystal violet) in their thick peptidoglycan cell walls. On the other hand, Gram negatives have a thin cell wall and cannot retain the purple stain, so when they are counterstained, they will appear red
Identify the terms endocytosis and exocytose and distinguish between them?
endocytosis is the movement of a substance into a cell by a vesicle. while the movement of a substance by a vesicle tot eh outside of a cell is called exocytosis
What stain is used to distinguish differences between the cell walls of medically important bacteria?
oxy clean it works on anything
What should she look for to distinguish the eukaryotic cell from the prokaryotic cell?
nucleus - Study Island
How can distinguish between early and late anaphase?
early anaphase is when centromeres divide and late anaphase is when the chromosomes reach the poles of the cell
distinguish between primary and secondary cells?
A primary cell cannot be recharged whereas a secondary cell can be recharged. In a primary cell chemical reaction is irreversible whereas in a secondary cell chemical reaction is reversible. ... A primary cell is light and less expensive whereas a secondary cell is heavy and expensive.
How you can Distinguish one part of a worksheet from another?
By the cell identifier.
What gives cells color?
Pigments are what will usually give a cell a certain color. Usually on a Microscopic level, most components of a cell are colorless. We use dyes and stains to help us distinguish between these components.
