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Explain the Turbidity Measurement?
Presence of sufficient number of microbes makes the liquid medium turbid. Turbidity also increases with the multiplication of microbes. Estimation of turbidity can be used both for the quantitation of microbes and monitoring microbial growth. The technique depends on the fact that cells scatter the light striking them and the amount of scattering is directly proportional to the biomass of cells present and indirectly to the cell number. The scattering of light can be measured by spectrophotometer or photometer. In the instrument, a beam of light is passed through a cell suspension and the amount of unscattered light is detected by a light sensitive detector. Photometer uses a simple filter to generate incident light whereas in spectrophotometer, prism is used instead of a filter. Commonly used wavelengths for bacteria are 540 nm, 600 nm and 660 nm. More the number of microbes in the suspension, less is the light reaching to the detector and read as percent transmission or absorbance (OD, optical density, a logarithmic expression).
Intramuscular Route of Injection Purpose When rapid action is required. When drug would prove irritating to the subcutaneous tissue. Site selected must be whe
Biological fixation - Nitrogen Fixation Approximately 63% of all nitrogen fixed is through biological fixation. Nitrogen fixing organisms are primarily prokaryotes; bacteria a
Wat type of animal is tick and weevil?
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Explain the Procedure for Preparation of Bacterial Smear? Start the exercise by following the steps enumerated herewith. (1) Take properly washed and dried glass slides for
Complications : IABP can compromise blood flow to the leg at the time of insertion, pumping or after removal of balloon. It may also cause perforation, bleeding, thrombosis, embol
please give me the expansion for ''gradient hypothesis'' and the two types of gradient hypothesis in deelopment of animals in detailed manner
need different types of information about fishes and their pictures
THEOR Y OF EPIGENESIS - It was propounded by C. F. Wolff and supported by Von Baer. According to it, the egg contains the substances which are required in the formation
Synapse Nervous System Structural feature of unique importance in the nervous tissue is the synapse. A synapse is the anatomical site at which axon terminal processes of one
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