Biology Blogs For Class11th, 12th and NEET

                                   Five Kingdom Classification Early biologists classified all species as either plants or animals. Since this method makes it difficult to research specific creatures, American taxonomist R.H. Whittaker created the five-kingdom classification in 1969. This system divides all organisms into groups based on how they are organized and how they are fed. Important standards for this classification include - The complexity of cell structure i.e. Prokaryotic and Eukaryotic. The complexity of the Organisms body is Unicellular and Multicellular. Mode of nutrition Autotrophs and Heterotrophs. Lifestyle. Phylogenetic Relationship. Based on these criteria, Whittaker classified the living world into the following categories  - Kingdom Monera                 Kingdom Protista Kingdom Fungi Kingdom Animalia Kingdom Plantae  Kingdom Monera - Kingdom monera includes Prokaryotic Organisms.   Their nutritional methods are different like they

                                 Recombinant DNA Technology The technology in which genetic material   is transferred by artificially means from one organisms to genome of another organisms where it replicate and expressed is  called Recombinant  DNA Technology . For Example - The best example to understand this process is Mosquito . Mosquito act as a vector and transfer it's pathogen into human body where it replicate and expressed in form of disease called Fever , Dengue , Malaria etc . Tools Of   rDNA Technology - rDNA technology accomplish only  by  using this key tools -                                                        Restriction Enzyme        Polymerase Enzyme                                                             Ligase Enzyme        Vector        Host Organisms Restriction Enzyme -  As the name suggest the enzyme which restrict the entry of foreign DNA into the bacteria is called Restriction Enzyme .The enzyme was first postulated by W.