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What is Quantitative Techniques?
Microbial quality of substances like food, milk, air, water, soil etc. can be assessed both qualitatively and quantitatively. Quantitative enumeration of microorganisms in a given sample can be accomplished in a laboratory by employing various methods, either by direct or indirect counts, each having its own advantages and disadvantages. No single method is always best. The most appropriate approach will depend on the experimental situation. These methods can also be used to measure microbial growth, determining growth rate and generation time. These methods devised for microbial quantitation either measure the cell numbers or determine the cell mass or cell constituents like DNA, protein, O2 uptake, carbon dioxide production, turbidometric measurement for increase in cell number, membrane filter count and the serial dilution agar plate method etc. Microbial populations are very large, therefore, most of the methods of counting are based on direct or indirect counting of a very small sample, achieved indirectly by a series of dilutions. Calculations then determine the size of total population.
Artificial Inspiration : a. After artificial expiration, the rescue worker should slowly release the pressure on the back of the victim. b. This will cause the chest cavity t
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Blood from the fetus circulates through the placenta. a) What substances pass (i) from the maternal to the fetal blood, (ii) from the fetal to the maternal blood?
Cobalt (Co) - Micronutrients The Co concentration in the dry matter of plants grown in soil normally lies around 0.02 to 0.5 ppm. In soils the content varies from 1 to 40 ppm.
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What is the OBJECTIVES of evaluation of patient clinical examination ? After going through this unit, you should be able to: 1. Carried out the general physics-examination; 2.
Variation exhibited in shared traits present in a population is due to alleles of the shared genes. can be influenced by interactions of alleles of multiple genes. Can be influence
Distribution of Stomata There are two parameters normally used for expressing the distribution of stomata. Stomatal frequency: The number of stomata per unit area
Agar Agar is a polysaccharide found in the cell walls of some red algae and is unusual in containing sulfated galactose monomers. Certain marine algae of the class Rhodophyceae
Q. Explain Spoilage by yeasts? Yeasts dominate in the spoilage of fruit products which contain high acid content due to their ability to tolerate high acid environment. Yeast
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