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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).
Functional Properties of Starches Starch is a major source of energy (calories) in grains and tubers, and foods made from them. However, when starch is added to products as an
Spinal cord The elongated part of CNS that runs downward in the spinal canal as continuationof medulla oblongata is called spinal cord. The functions of the Spinal Cord are
Side Effects of Sedatives and Hypnotics: Side effects are same like anti anxiety drugs such as hypotension, palpitation, syncope (fainting), change in libido, physical or psy
Describe the result of Pulmonary Embolism? Results : The mortality in different series is reported between 3 and 36 per cent. In haemodynamically unstable patients this coul
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#what characteristics of green algae that led to biologists considered it as a plant?
Define Mineral Requirements during pregnancy period - Iron? While B 12 and folk acid are needed for the normal erythropoiesis, they must be accompanied by adequate amounts of
why psi g is ignored in water potential of plants?
Explain the Generalities? A binary system has two components; C equals 2, and the number of degrees of freedom is F = 4 - P. There must be at least one phase, so the maximum po
Assessment of Peripheral Vascular Disorders History Obtain the following information by interviewing the patient and family members Previous vascular surgery, previ
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