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What is made by staining and arrganging chromosomes so that they can be viewed microscopically?
A karyotype is made by staining and arranging chromosomes so that they can be viewed microscopically.
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What color would the bacterial cell have when viewed microscopically after the treatment with ammonium oxalate crystal violet?
The bacterial cell would appear purple when viewed microscopically after treatment with ammonium oxalate crystal violet. The crystal violet binds to the peptidoglycan layer of the cell wall, causing it to retain the purple color even after subsequent washing steps.
Why can't we use human cells to look at under a microscope?
We can use human cells to look at under a microscope; in fact, it is a common practice in biological research. However, human cells typically require special preparation, such as fixation or staining, to enhance visibility under a microscope. Additionally, the cells must be cultured properly, and sometimes they are viewed in thin sections to allow for adequate light penetration. Overall, while human cells can be observed microscopically, they need specific techniques to ensure clarity and detail.
How are DNa bands viewed?
DNA bands are usually visualized using techniques such as agarose gel electrophoresis or polyacrylamide gel electrophoresis. After electrophoresis, DNA bands can be viewed under UV light by staining the gel with a fluorescent dye, such as ethidium bromide. The DNA bands will appear as distinct bands of varying sizes depending on the migration pattern of the DNA fragments.
What are two types of chromosomes in the body how are they different?
the two types of chromatins are euchromatin and heterochromatin.They are different in that heterochromatin is coiled while euchromatin is not coiled.It is this coiling that makes heterochromatin inactive and therefore less in the nucleus when the nucleus is actively involved in protein synthesis.On the other hand,euchromatin is active because its DNA is exposed. When viewed under a microscope,the two chromatins have different stains.
What physical part of bacteria is responsible for the color difference at the end of the gram staining process?
In Gram positive bacteria it is the cell wall made up of a thick layer of peptidoglycan which holds the stain so that this bacteria can be viewed. Gram negative bacteria have two thin layers of peptidoglycan which loses the stain in the secondary washing, hence their terminology as negative.
What is made staining and arranging chromosomes so that they can be viewed microscopically?
A karyotype is made by staining and arranging chromosomes so that they can be viewed microscopically.
What color would the bacterial cell have when viewed microscopically after the treatment with ammonium oxalate crystal violet?
The bacterial cell would appear purple when viewed microscopically after treatment with ammonium oxalate crystal violet. The crystal violet binds to the peptidoglycan layer of the cell wall, causing it to retain the purple color even after subsequent washing steps.
What does amorphous sediment mean?
Amorphous Crystals ¤Amorphous urates are found in acid urine. These crystals may appear pink on gross analysis and yellow microscopically (Figure 2-12). These crystals appear as granules in the urine sediment. Amorphous phosphates are found in alkaline urine. These granules are colorless microscopically and also appear granular when viewed microscopically. Occasionally amorphous material may appear in clumps or masses. It may be difficult to distinguish amorphous crystals from bacteria since they may be of the same size when viewed microscopically. However, amorphous crystals are soluble in opposing acid or alkaline solution; bacteria will not. Amorphous urates will also dissolve when heated. cited from: http://www.tetonnm.com/pics/MESSamplePages/1-893441-10-5.pdf retrieved 4/11/2009
What are the negatives of the practice?
Negative staining does not change the chemical structures within cells, it simply outlines the cell structure allowing the cell to be viewed easier.
What has 1 face but contains no polygons?
Tough question, because a face is a side of something. A line would be a sufficient answer, because you can only see one side. However, it still can be viewed as a closed figure if you get down microscopically.
Why do chromosomes resemble the letter X when viewed during methaphase?
Because there are two sister chromatids joined at a point in the middle (the centromere).
Why can't we use human cells to look at under a microscope?
We can use human cells to look at under a microscope; in fact, it is a common practice in biological research. However, human cells typically require special preparation, such as fixation or staining, to enhance visibility under a microscope. Additionally, the cells must be cultured properly, and sometimes they are viewed in thin sections to allow for adequate light penetration. Overall, while human cells can be observed microscopically, they need specific techniques to ensure clarity and detail.
How does a phase-contrast microscope differ from a bright field microscope?
1.diffrent typeof diaphraghms 2.a phase plate 3.living sample can be viewed 4.natural processes ccan be viewed without staining 5.enhances clarity 6.can be of two types :positive and negative positive:background much brighter than specimen negative:background is darker
Why must specimens viewed with a compound microscope be thin why are they sometimes stained with dyes?
Specimens viewed with a compound microscope need to be thin to allow light to pass through and be focused by the lenses. Staining with dyes increases contrast and visibility of certain structures within the specimen by highlighting specific parts of the sample. This helps to distinguish different components and makes them easier to observe under the microscope.
Why are the X and Y chromosomes called sex chromosomes?
The X and Y chromosomes are referred to as sex chromosomes because in mammals, sex is determined by the presence or absence of a Y chromosome. Therefore because these chromsomes relate directly to the sex/gender of an animal, they are called sex chromosomes. Genetically normal females have XX and genetically normal males have XY.
How are DNa bands viewed?
DNA bands are usually visualized using techniques such as agarose gel electrophoresis or polyacrylamide gel electrophoresis. After electrophoresis, DNA bands can be viewed under UV light by staining the gel with a fluorescent dye, such as ethidium bromide. The DNA bands will appear as distinct bands of varying sizes depending on the migration pattern of the DNA fragments.
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