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What is the liqudi called when testing for starch?
The liquid used to test for starch is called iodine solution. Iodine solution turns a blue-black color in the presence of starch.
What kind of stain are used to stain plant and animal cells?
Plant cells are typically stained with dyes like iodine to highlight structures like nuclei and starch granules. Animal cells can be stained with dyes like hematoxylin and eosin to distinguish different cell components like nuclei and cytoplasm. These stains help researchers visualize and study the cells under a microscope.
Why are cells stained with iodine solution?
Cells are stained with iodine solution to visualize the presence of starch. Iodine reacts with starch to form a bluish-black complex, making it easier to visualize and distinguish starch-containing structures within the cell, such as amyloplasts or starch granules.
An unstained wet mount preparation of epidermal cells shows few details Which substance could be added to the slides to make the details more visible?
You could add iodine solution to the wet mount preparation of epidermal cells to make the details more visible. Iodine is commonly used as a staining agent to enhance the visibility of cell structures such as nuclei and cell walls.
Add a drop of iodine to both a distilled water test tube and to the test tube containing the starch solution in the test tube What do you observe?
The starch solution will turn black, while the distilled water will remain brown, the same colour as the iodine. This is actually because water, normally used as a control, does not contain any starch and as we know, the iodine test is highly specific for the presence of starch hence no colour change other than iodine dissolving in water to form an iodine solution contrary to starch which we know complexes with iodine, to form starch-iodine complex forming the blue-black colour observed
What are the comparison between cheek cell stained with iodine and cheek cell stained with methylene blue?
Cheek cells stained with iodine typically appear yellow-brown, highlighting the presence of starch granules if any are present, but they may not show much cellular detail. In contrast, cheek cells stained with methylene blue exhibit a more vibrant blue color, allowing for clearer visualization of cellular structures such as the nucleus and cytoplasm. Methylene blue is better for highlighting cellular morphology, while iodine is primarily used for specific staining of certain components. Overall, methylene blue provides more detail for observing cell structure compared to iodine.
Can you use iodine solution instead of methylene blue in cheek cell slide?
Yes, you can use iodine solution instead of methylene blue to stain cheek cells. Iodine primarily stains carbohydrates, highlighting certain cellular structures like nuclei and providing contrast. However, methylene blue is a general stain that can better enhance the visibility of cellular details, such as the nucleus and cytoplasm. While both stains can be used, methylene blue may offer clearer results for observing cheek cells.
When potassium iodide reactsa with potassium bromide in the presence of methylene what is the color change?
The reaction between potassium iodide and potassium bromide in the presence of methylene blue will result in the formation of elemental iodine (I2) which imparts a purple color to the solution. Initially, the reaction mixture will be colorless, but as iodine forms, the solution will turn purple.
What is the colour of the nucleus that is stained with iodine?
The nucleus stained with iodine appears dark purple or black.
What color is Lugol's iodine?
The color of the chromosomes stained in a onion cell is usually a deep purple.
What is the difference between strong iodine solution and weak iodine solution?
their color
Is iodine solution ionic?
A solution of iodine is covalent.
What turns blue black when stained with iodine?
Starches turn blue-black when stained with iodine (which usually stains things a reddish-brown or amber color).Iodine turns blue black when starch is present
Can food coloring be used to substitute methylene blue in staining cheek cells?
iodine
What is the solution of tincture of iodine?
iodine
How can you observe a white blood cell in a light microscope?
White blood cells can be observed in a light microscope by preparing a blood smear, staining the cells with a dye like Wright's stain or Giemsa, and then viewing them under high magnification. The cells will appear as small, irregularly shaped cells with a dark-stained nucleus and a lighter-stained cytoplasm.
Are there cellular structures other than amyloplasts stained intensely by iodine?
Yes epithelial cells are stained
