higherschool

Technics for proclucture (Isolation) In natural heavy tide macrorganism usely grow in a camp mixed population cantining seural speics there for a singhle type of macrorgranism that can be adiquitely in a mixed calture . there for a need of proclucture is required that is ie population of cell arging singhle cell so  there are three technices  (1) spread plate  (2) streak plate  (3)  pour plate  (1) spread plate In a spread plate of a cell a mixture of an a agar surface so in to a completely separate colony    (2) streak plate In this method the microbial mixture is transferred to the edge of and agar plate with the help of enunciation lop of and then stricked out over the surface in one of the suveral pattens  (3) pour plate  In this method in orginal several time to reduse microbial population saficiant to the seprate                The small volume of several dilution are mixed with liquid agar that has been the mixture is poured emi

Bacteria Bacteria are microscopic single-celled organisms that thrive in diverse environments. They can live within soil, in the ocean and inside the human gut. Humans' relationship with bacteria is complex. Sometimes they lend a helping hand, by curdling milk into yogurt, or helping with our digestion. At other times they are destructive, causing diseases like pneumonia and MRSA. Structure Based on the relative complexity of their cells, all living organisms are broadly classified as either prokaryotes or eukaryotes.  Bacteria are prokaryotes. The entire organism consists of a single cell with a simple internal structure. Unlike eukaryotic DNA, which is neatly packed into a cellular compartment called the nucleus, bacterial DNA floats free, in a twisted thread-like mass called the nucleoid.  Bacterial cells also contain separate, circular pieces of DNA called plasmids. Bacteria lack membrane-bound organelles , specialized cellular structures that are designed to

Tissue  In biology,  tissue  is a cellular organizational level between cells and a complete organ. A tissue is an ensemble of similar cells and their extracellular    matrix from the same origin that together carry out a specific function. Organs are then formed by the functional grouping together of multiple tissues. The English word is derived from the French  tissu , meaning something that is woven, from the verb  tisser , "to weave". The study of human and animal tissues is known as histology  or, in connection with disease, histopathology. For plants, the discipline is called plant anatomy. The classical tools for studying tissues are the paraffin block  in which tissue is embedded and then sectioned, the histological stain, and the optical microscope. In the last couple of decades, developments in electron microscopy, immunofluorescence, and the use of frozen    tissue sections have enhanced the detail that can be observed in tissues. With these tools, the