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Explain the Microscope Colony Counts and Agar Droplets?
Microscope Colony Counts - The method involves counting of micro-colonies that develop on agar layered over a microscope slide.
Agar Droplets - The method was developed by Sharpe & Kilsby. In the method, food homogenate is diluted in a set of three tubes of molten agar. From each tube, a line of 5 droplets is transferred to empty Petri-plate with the help of a sterile capillary pipette. Colonies are counted with the help of 10x viewer after incubation for 24 hours. The method is faster than conventional TPC and also no dilution blanks are required. Only one Petri-dish per sample is needed.
Nicotinic acid (Niacin) Niacin refers to both nicotinic acid and its amide derivative. Nicotinic acid occurs as white or almost white crystals or as a crystalline powder of the
Does every amino acid have a central carbon? To which organic group is that central carbon bound? A carboxyl group -COOH, an amine group - NH 2 , an atom of hydrogen -H and a v
Consequences of Air Pollution The physiological effects of toxic pollutants on living beings can be of two types: Acute effects and Chronic effects. Acute effec
Auxins - Apical Dominance The role of auxins in controlling the apical dominance was shown by the experiments done by Skoog and Thimann with the broad bean plant. They removed
Asymmetric carbon atom : a carbon atom attached with four different groups or atoms.
a) Which region of the retina gives the most accurate interpretation of the image? b) What type of light-sensitive cell is present in this region? (a) The fove
Define Procedure for Testing the Presence of Starch in Milk 1. Take 1 ml of milk sample in a test tube. 2. Add few drops of iodine solution. (2.5 gm of iodine is dissolved i
What is Cerebellum Cerebellum is situated under the cerebrum. Cerebellum has right and left lobes which are joined and form a part of pons. The function of the cerebrum is
Define Factors that affect the requirement of Protein? Protein requirement is greatly influenced by many factors such as age, environmental temperature, energy intake, gender,
Using the words 'cilia' and 'mucus', describe, very briefly, how the body gets rid of dust which enters the lungs. The lining of the air passages makes mucus which traps dust p
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