Category: Class 12
Cyanobacteria Cyanobacteria are Gram negative photosynthetic prokaryotes, being the most primitive organisms to have oxygenic photosynthesis. They added oxygen to the atmosphere, which is indispensible for the existence of …
Economic importance of Bacteria Bacteria play significant role in day to day activates of human beings. 1.Beneficial activities a) Role in agriculture i) Decay and decomposition of organic matter …
Reproduction Bacteria reproduce mainly by asexual method and also show sexual recombination( True sexual reproduction is absent). 1. Asexual Reproduction : Bacteria produce several types of asexual spores like , …
Autotrophic Nutrition 1. Photoautotrophic bacteria : These bacteria are capable of entrapping solar energy and utilizing it for the synthesis of complex food materials due to the presence of …
Bacterial Life Processes Discussion of bacterial life processes revolves around the study of the prominent metabolic activates like respiration and nutrition. (A) Respiration : on the basis of mode …
Structure of Flagella The entire flagellar apparatus is made up of three distinct region : basal body, hook and filament. Basal body : it is most complex portion of …
Bacterial Cell Structure Bacterial cell structure is very simple although they are very complex in behavior. They show the most extensive metabolic diversity. Electron microscope can only reveal the …
Eubacteria Bacteria are cosmopolitan and occur in every habitat wherever living or dead organic matter is present. Anton von Leeuwenhoek discovered bacteria in rain water which had been allowed …
