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Explain Counter Stain - Ziehl-Neelsen Method?
Methylene blue is used to stain previously decolourized cells. All non acid-fast bacteria de-stained by acid alcohol now absorbs counter stain and takes on its blue colour. All acid-fast bacteria remained red in colour due to primary stain.
Genus Mycobacterium shows acid fastness. These are aerobic, slightly curved or straight rods that sometimes branch or form filaments. These filaments readily break down into rods and coccoid bodies, when disturbed. Some grow very slowly. Some are free-living saprophytes and some are pathogens, e.g. M. bovis could cause tuberculosis in cattles, M. tuberculosis causes tuberculosis in humans, M leprae causes leprosy in humans. Acid-fast stain has a diagnostic value in identifying these pathogenic mycobacteria.
Determine about the Manganese Manganese performs some functions in photosynthesis and acts to regulate the intake of certain elements and their oxidation states. Several cr
their structure
Q. What are the examples of secretory cells? Endocrine and exocrine pancreatic cells, parathyroid and thyroid endocrine cells, adenohypophysis, adrenal and pineal endocrine cel
Q. What is the basic importance of water for enzymatic activity? Ans. Biological catalysts, Enzymes, relay on water to reach their substrates and attach to them. There is
Density - Population Parameters and Regulation Density is defined as number of individuals or population biomass per unit of area or volume at any given time. Biomass refers t
Demography : This is the study of populations. In the other words demography is the statistical study of human population. This may be a very general science which can be applied t
How Sugar is used in Custards? While flour protein forms the structure of baked goods, custards are composed of egg protein structures. If the egg white solidifies too early al
Suppose that there are six pairs of alleles which control height and that every dominant allele adds 5cm to the stature. Assume also that the average height of an adult (with equal
Class of Subphylum Uniramia - Insecta Class Insecta consists of nearly a million described species. There are more species of insects as compared to all the other species of a
List a few shortcomings of native starches which make it unacceptable in certain food applications. Lack of free-flowing properties of water repellence of the starch granules,
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