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Explain Negative Staining Technique?
Here, a stain has a negatively charged chromophore that is repelled by the negative bacterial surface. It results in indirect staining of microbial cell. It appears as clear area surrounded by coloured background. It is used for visualizing many cell structures like capsule. Negative stains also work better under neutral or alkaline conditions. Microorganisms can also be stained either by simple staining or differential staining.
In the process of tissue culture in plants, what is required to induce the formation of a complete plant, in addition to a growth medium with nutrients? The appropriate p
Define Unintentional Adulteration - Types of Adulteration? These are the contaminations occur unknowingly or incidently in the food during harvesting, handling, transportation,
how do they adapt to their parasitic mode of feeding
GENETIC TERMINOLOGY (i) Gene - Mendel used the term factor for a gene. A gene is the unit of DNA responsible for the appearance and inheritance of character. (ii)
Q. What are sensory receptors? Sensory receptors are structures specialized in the acquiring of information, mechanical pressure, like temperature, pH, luminosity and chemical
What is Dyslipidaemia ? The results of epidemiological studies, as well as trials with angiographic or clinical endpoints, confirm the importance of various lipid fractions in
Medication delivered in the form of a pill contains an active ingredient or ingredients. Beside the drug itself, the pill also contains "fillers". The filler has several functions.
Explain the Laminar Flow Hood - Biological Safety Cabinet? It illustrates the laminar flow hood. As you can see, this biological safety cabinet contains HEPA (high efficiency p
Why do vestigial structures persist in modern organisms? Explain the evidence that indicates that species evolve over time. The environment will not select for or against
Arrange the following processes sequentially to define the translocation of food through sieve tubes. i. Unloading of sugar in sink cells (or cells of root). ii. Uptak
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