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Define Ziehl-Neelsen Staining Technique?
Ziehl-Neelsen staining is used for staining these bacteria. The technique was discovered first by Robert Koch during his pioneering investigations on tuberculosis and was the fore-runner of Ziehl-Neelsen stain used today for diagnosis of these organisms in laboratory. Acid fast bacteria are called so because once these cells get stained with basic fuchsin, these resist decolourization with acid alcohol as can be seen in margin illustiation. This acid fastness red stain is due to high lipid content particularly of mycolic acid in their cell wall. Mycolic acid, is a group of branched chain hydroxyl lipids, which bind covalently to peptidoglycan of cell wall giving the cell surface a waxy, hydrophobic consistency.
Elaborate the following term in detail - Macronucleus. One of two types of dimorphic nuclei found in ciliate protozoans. Macronucleus contains multiple copies of genome (polypl
If water dousing, homeopathic cures, and so on work for just me but not for anyone else, it is still science.
Benthos - Aquatic Ecosystem The benthos or the benthic organisms are those found living in or on the bottom or benthic region of the water mass. They exhibit a variety of adap
Q. In what order should Personal Protection be removed? Personal protection is removed in following order: Gloves Mask Glasses Wash hands
RECIPROCAL CROSSES Similar results were obtained with reciprocal crosses also. A reciprocal crosses involves the same traits but carried by sexes opposite to those in the origi
What is Skeletal girdles? Explain in brief. In vertebrates, bones which connect the appendages on the left and right side of appendicular skeleton to each other. Skeletal girdl
What is Cilia and Flagella? The surfaces of many eukaryotic cells bear cilia or flagella, built from specialized microtubules. Cilia are tiny brushlike hairs, and flagella are
Locomotory Structures Annelids possess three kinds of locomotory structures, namely parapodia, setae and suckers. Parapodia are segmentally arranged, lateral, hollow extensio
Which of the below is NOT hormone associated with male reproductive physiology: a) Prolactin b) Testosterone c) Interstitial hormone d) Follicle-stimulating hormone
Mitochondria, which fuel life's processes in all cells, uses nutrients from digested food and oxygen which has diffused across cell surface. In freshwater protozoans water expulsio
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