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Meghna Thapar 5 years, 3 months ago
The Gram stain involves staining bacteria, fixing the color with a mordant, decolorizing the cells, and applying a counterstain. Both gram-positive and gram-negative cells have peptidoglycan in their cell walls, so initially, all bacteria stain violet. Gram staining involves three processes: staining with a water-soluble dye called crystal violet, decolorization, and counterstaining, usually with safanin. Due to differences in the thickness of a peptidoglycan layer in the cell membrane between Gram positive and Gram negative bacteria, Gram positive bacteria (with a thicker peptidoglycan layer) retain crystal violet stain during the decolorization process, while Gram negative bacteria lose the crystal violet stain and are instead stained by the safranin in the final staining process.
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Unique Girl.. ? 6 years ago
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Sia ? 6 years ago
Taiwan is not a member of the United Nations. Only about 25 countries recognize Taiwan as an independent country. Due to political pressure from China, Taiwan does not maintain an embassy in the United States, and the United States has not recognized Taiwan since January 1, 1979.
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Meghna Thapar 5 years, 3 months ago
Meristematic tissues are growth tissues and found in the growing regions of the plant. According to their position in plant, meristems are apical, lateral and intercalary.
- Apical meristem - Apical meristem is present at the growing tips of stems and roots and increases the length of the stem and the root.
- Lateral meristem – Lateral meristems are found beneath the bark. The girth of the stem or root increases due to lateral meristem (cambium).
- Intercalary meristem - Intercalary meristem is the meristem at the base of the leaves or internodes (on either side of the node) on twigs. It increases the length of the organs such as leaves and internodes.
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The narrator's uncle was considered to be a crazy man. Actually, he was the natural descendant of the crazy streak in the family. He was a huge and powerful man. He has a big strong head with black hair. He was a man of furious nature. He was short tempered and of irritable nature. He would not let anybody talk before him. He would stop him shouting. "It is no harm; pay no attention to it."
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