Sourav Pan
Chlorophyta are commonly known as green algae. It is one of the major group of algae. They are mostly aquatic and found in freshwater as well as marine water. Some members are also found in damp soil. Some forms can grow in extreme places like arctic snow. So the habitat of Chlorophyta is not only … Read more
Algae are a group of autotrophic, non-vascular thalloid plants with chlorophyll and without any formation of embryo. They are mostly photosynthetic in nature. The plant body may be unicellular, colonial or multicellular. Algae possess a simple plant body which is called thallus. The thallus is not differentiated into true root, stem and leaves. They also … Read more
Diatoms are unicellular, eukaryotic microalgae which are found in marine water, freshwater, soil and many moist places. They are microscopic organisms and mostly live as plankton in water bodies. Diatoms are important member of phytoplankton and they perform photosynthesis like green plants. The most characteristic feature of diatoms is the presence of hard outer wall … Read more
Algae are a group of autotrophic, photosynthetic and non-vascular organisms. They may be unicellular or multicellular in nature. Some algae are microscopic like phytoplankton, while some are large multicellular forms like giant kelp. Algae contain chlorophyll and prepare their food by photosynthesis. During this process they release oxygen and form organic food materials. For this … Read more
Eyespot help in cell’s phototaxis, it senses the intensity and direction of light source and responds to it. In response, it helps the organism in swim towards the light (positive phototaxis), or away from it (negative phototaxis).
Affinity chromatography is a liquid chromatography method. It is used to separate and purify a specific biomolecule from a mixture. It is mostly used for proteins, enzymes, antibodies and nucleic acids. This method is based on the specific binding of target molecule with a ligand. The ligand is fixed on the solid stationary phase. When … Read more
Bench top centrifuge is a compact laboratory instrument which is kept on laboratory table or working bench. It is used for the separation of different components of liquid sample. It works by rotating the sample tubes at high speed with the help of a motorized rotor. During this process, a strong centrifugal force is produced. … Read more
Hematocrit centrifuge is a laboratory instrument used for separation of blood components. It works by high speed centrifugal force. The blood sample is kept in narrow capillary tube and then it is rotated very fast. During centrifugation, the heavier red blood cells (RBCs) move to the bottom of the tube. The plasma remains at the … Read more
Native PAGE is a gel electrophoresis technique used for separation of proteins and nucleic acids. It is called native because the molecule remains in its natural form. The protein is not unfolded during the process. In this method, SDS, urea and reducing agents are not used. So the protein keeps its original charge, shape and … Read more
Bioreactor is a special vessel or system used for growing living cells. It is used for microorganisms, plant cells and animal cells. It gives controlled condition for their growth and activity. In bioreactor, temperature, pH, oxygen level and nutrients are controlled properly. Due to this, the cells grow in suitable condition. The metabolic activity of … Read more
