Air sampling methods make the use of impaction, impingement and centrifugal collection principle to entrap the contaminants from the known volume of the air sample. The volume of collected air is first measured, and then it is expressed in the concentration against the volume of contaminated air, either in ppm (parts per million) or (mg/m3). …
Hot air oven sterilization is a process of decontamination carried out by an electrical device that utilizes dry heat to sterilize various type of equipment or articles kept inside its chamber. It is used for sterilizing objects that cannot be subjected to wet sterilization and objects that are less prone to dry heat. It was …
Integuments in plants are the maternal tissues or having a maternal origin, as they originate from the ovular tissue or chalazal tissue (a part of the female reproductive system of a flower). A term integument merely refers to the protective layer. In terms of botany, an integument is a layer encircling the ovule. After the …
Hanging drop method permits the examination of the living microorganisms, which involves fixation of microbial suspension into a drop of fluid over the glass slide. Therefore hanging drop method is the process, in which the microorganisms are suspended into a drop of fluid. It is a modified version of the wet mount technique. The shape, …
The difference between apoptosis and necrosis is mainly due to factors like: Cell death: Apoptosis is a type of cell death, which occurs by the self-annihilation of the cell. Oppositely, necrosis is a form of focal cell death caused due to the environmental perturbations. Occurrence: Apoptosis occurs to maintain the proper functioning of the cell …
Genetic codons are the gene sequences which encodes specific amino acids that polymerize to form proteins. DNA is the heritable material that serves as a source of the hereditary unit, which transfers genetic information from one to the next generations. Therefore, in a cell, DNA is a director that mediates the synthesis of proteins. A …
Protoplasm is a term used to indicate the living matter of the cell which includes the cytoplasm and the nucleus. It is a colourless colloidal suspension of lipids and proteins in water. It was put forward in the year 1835 and was primarily considered as the ground substance of the cell. But these days, two …
The difference between plasmolysis and deplasmolysis is mainly due to factors like: Water movement: In plasmolysis, the movement of water is from the cell protoplast to the surrounding and deplasmolysis cause movement of water into the cell protoplast. Water potential: Plasmolysis occurs due to the low water potential of the surrounding than the cell cytoplasm, …
Difference Between Plasmolysis and Deplasmolysis Read More »
Food preservation techniques have led to an increase in the longevity or shelf life of food items by introducing different ways of preserving methods. Its study is not only important in the field of food science, but also in daily lives, to set up food businesses etc. The methods of food preservation include some inexpensive …
Trickling filter process is one of the types of aerobic wastewater treatment. It is a fixed-bed bioreactor that is the part of secondary wastewater treatment, which eliminates the coarse particles, suspended organic and inorganic waste, small colloids etc. out of the primary effluent. A trickling filter is also called biological filter, as it makes the …