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Define Principle for Simple Staining of Bacterial Cultures?
In simple staining, a single staining agent preferably a basic dye is used. Commonly used basic stains are carbol fuchsin, crystal violet and methylene blue. Different exposure times are used for different dyes, e.g. for carbol fuchsin 15-30 seconds, crystal violet 20-60 seconds and methylene blue 1-2 minutes. Being positively charged, these binds strongly to bacterial cells, which have negative charge on their cell surface. Simple staining gives idea regarding size, shape and arrangement of cells. Its value lies in its simplicity and ease of use.
What is photoperiodism? Photoperiodism is the biological response shown by some living beings to their daily time of light exposure (photoperiod).
Fertilisation: Fertilisation is the process of fusion of male and female gametes. For fusion of male and female gametes, pollen grains have to reach the surface of the stigm
a) Donald is a 50 year old male with a long history of bipolar disorder. He has been hospitalized three times in the last 8 months for manic episodes. He was just admitted to your
Which of the following is not true regarding the complement system?Answer This system involves a group of at least 20 proteins found in the blood plasma. During an infection, one p
Explain about the Picric acid test? This test is answered by all reducing sugars, with a free aldehyde or ketone groups. Monosaccharides possess a free aldehyde or ketone group
Differentiation is largely a matter of gene control and imprinting (CH3) plays a role, but ___ may also play a role.
Sunlight - Aquatic Habitats Sunlight is a major limiting factor for water bodies, since light rapidly diminishes as it passes down the column of water. The upper layers of the
How do homeotic genes regulate development in Drosophila? Homeotic genes code for regulatory proteins that are thought to control the rate of cell division in various body area
what so special for phylum annelida
Hereditary fructose interolance is a rare recessive disorder that is caused by a mutation in the aldolase B gene. As a result of this disorder individuals may have all of the follo
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