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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).
Acute and Chronic Tonsilitis: Tonsilitis refers to the inflammation of tonsils and lymphatic tissue that are located on each side of oropharynx. Acute infection of tonsils
Explain Total Parenteral Nutrition OPN) It is a method of providing, complete nutritional support in which the gastrointestinal (GI) tract is bypassed by introducing assimilab
Define about the Ultraviolet rays - carcinogenic? Ultraviolet rays: There is ample evidence from epidemiological studies that ultra violet rays derived from the sun induce an i
Determine the net charge of the predominant form Asp at (a) pH 1.0, (b) pH 3.0, (c) pH 6.0, and (d) pH 11.0?
Please answer the following two questions on Sequence X: 1) DNA sequence databases 1. What is the EMBL-Bank accession number for this sequence (use BLAST)? 2. Which gen
In a properly functioning negative feedback system A. value of the controlled variable will always be very close to the threshold value when the system is in steady state.
Q. Write the meaning of DSME? Generally, it is observed that soon after being diagnosed with diabetes, the patient gets worried or get depressed. This is a stage where the pati
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Hazard identification We start the process of risk assessment by first identifying the hazard. The goal of hazard identification is to identification potential adverse hea
A healthy potted pitcher plant when kept in a green house with favourable conditions of light, temperature, soil and water showed poor growth although there was no infection. Give
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