In this article we will discuss about the design of transmission electron microscope, explained with the help of a diagram. In TEM a finely focused beam of electrons from an electron gun is passed through a specially prepared ultra thin section of the specimen. The beam is focused on a small area of the specimen by an electromagnetic condenser lens. [...]
Some of the important groups that represent bacterial diversity are as follows:- (1) Spirochetes (e.g., Treponema pallidum and Borrelia recurrentis) (2) Aerobic/microaerophilic, motile, helical/vibroid gram negative bacteria (e.g., Spirillum volutans, Aquaspirillum Bengal, Campylobacter, Helicobacter pylori, Bdellovibrio bacteriovorus) (3) Non-motile or rarely motile Gram negative curved bacteria (e.g., Cyclobacterium, Ancyclobacter and Brachyarchus) (4) Gram negative aerobic/microaerophilic rods and cocci (e.g., Pseudomonas, [...]
The below mentioned article provides a note on methanogenesis. Methane producing prokaryotes are a group of archaea which are capable of reducing carbon dioxide or low molecular weight fatty acids to produce methane. The methanogens are strictly anaerobic active at redox potential between - 350 and - 450 mv. They can use CO2 as an electron acceptor. They reduce CO2 [...]