The key difference between alpha beta and gamma proteobacteria is that alpha proteobacteria and beta proteobacteria are monophyletic while gamma proteobacteria are paraphyletic. Proteobacteria belong to a phylum of gram-negative bacteria with an outer membrane composed of lipopolysaccharides. This division of proteobacteria includes a wide variety of pathogens, such as Escherichia, Salmonella, Vibrio, Helicobacter and […]

The key difference between Bradyrhizobium and Rhizobium is that Bradyrhizobium is a slow-growing N2 fixing bacterial species while Rhizobium is a fast-growing N2 fixing bacterial species. Bradyrhizobium and Rhizobium are gram-negative N2 fixing soil bacteria. Bradyrhizobium is a rod-shaped bacterium having a single subpolar or polar flagellum. Bradyrhizobium belongs to the family Bradyrhizobiaceae which has […]

The key difference between Pseudomonas aeruginosa and Alcaligenes fecalis is that Pseudomonas aeruginosa is a beta-haemolytic encapsulated bacterium while Alcaligenes fecalis is an alpha haemolytic non encapsulated bacterium. Pseudomonas aeruginosa and Alcaligenes fecalis are gram negative, rod-shaped, aerobic bacteria. They belong to the phylum Proteobacteria. Pseudomonas aeruginosa belongs to the family of Pseudomonadaceae while Alcaligenes […]

The key difference between capsule and glycocalyx is that capsule is an organized, well defined, condensed extracellular layer that is tightly bound to the cell envelope of bacteria, while glycocalyx is an additional layer composed of polysaccharides and/or polypeptides outside the cell wall of bacteria. Some bacteria have an additional layer called glycocalyx outside the […]

The key difference between mucilaginous sheath and gelatinous sheath is that mucilaginous sheath consists of glycoproteins while gelatinous sheath consists of collagens. Cyanobacteria are photosynthetic bacteria. They are also known as blue-green algae. They are unicellular prokaryotic organisms. There are two types of sheaths around the cyanobacterial cells: mucilaginous sheath and gelatinous sheath. The mucilaginous […]

The key difference between Nitrosomonas and Nitrobacter is that Nitrosomonas is a bacterium that converts ammonium ions or ammonia into nitrites while Nitrobacter is a bacterium that converts nitrite into nitrates in the soil. The nitrogen cycle is an important biogeochemical cycle. Nitrogen cycle occurs via four major processes: nitrogen fixation, ammonification, nitrification and denitrification. […]

The key difference between culture and media in microbiology is that culture in microbiology is a method of growing and maintaining microorganisms in vitro for different analysis while media in microbiology are solid or liquid formulations which contain nutrients and other necessary materials to support the growth of microorganisms and cells. Microorganisms are tiny organisms […]

The key difference between TDP and TDT is that thermal death point (TDP) is the lowest temperature at which all microbes are killed in a 10-minute exposure while thermal death time (TDT) is the time it takes to kill a specific bacterium at a specific temperature. Heat is one of the most common forms used in microbial […]

The key difference between extremophiles and hyperthermophiles is that extremophiles are microorganisms that inhabit extreme environments such as hot niches, ice, and salt solutions, while hyperthermophiles are a category of extremophiles that thrive in extremely hot environments such as thermal vents, etc. Extremophiles are fascinating organisms that thrive in extreme environments where other terrestrial life […]

The key difference between volvox paramecium and euglena is that volvox is a green alga that lives as colonies in freshwater while paramecium is a ciliate protozoan that resembles the shape of a shoe and euglena is a single-celled flagellate eukaryote which has both plant and animal features. Kingdom Protista consists of diverse eukaryotic single-celled […]