What is the morphology of Bacillus megaterium? Bacillus megaterium is a gram positive, spore producing bacteria. It is a Eubacteria and is found in the soil. It has a rod shape and is one of
What is the morphology of Bacillus megaterium?
Bacillus megaterium is a gram positive, spore producing bacteria. It is a Eubacteria and is found in the soil. It has a rod shape and is one of the largest Eubacteria. Colonies form in chains due to sticky polysaccharides on the cell wall.
What is the cellular morphology and arrangement of Bacillus megaterium?
Bacillus megaterium is a rod-like, Gram-positive, mainly aerobic spore forming bacterium found in widely diverse habitats. With a cell length of up to 4 µm and a diameter of 1.5 µm, B. megaterium is amongst the biggest known bacteria.
What is the shape and morphology of a staphylococcus bacteria?
S. aureus cells are Gram-positive and appear in spherical shape. They are often in clusters resembling bunch of grapes when observed under light microscope after Gram staining. The name ‘Staphylococcus’ was derived from Greek, meaning bunch of grapes ( staphyle ) and berry ( kokkos ) [1].
What is the morphology of Bacillus?
Bacillus species are rod-shaped, endospore-forming aerobic or facultatively anaerobic, Gram-positive bacteria; in some species cultures may turn Gram-negative with age. The many species of the genus exhibit a wide range of physiologic abilities that allow them to live in every natural environment.
Is B subtilis aerobic or anaerobic?
The Gram-positive soil bacterium Bacillus subtilis, generally regarded as an aerobe, grows under strict anaerobic conditions using nitrate as an electron acceptor and should be designated as a facultative anaerobe.
Is B megaterium aerobic?
B. megaterium is a Gram-positive, aerobic spore-forming neutralophilic bacterium found in diverse habitats but commonly regarded as a soil bacterium. Its ability to utilize different carbon sources and grow at a wide temperature range (3 °C to 45 °C) makes it an ideal industrial organism9,10.
What is Staphylococcus morphology?
Morphology: Spherical cocci; often forming regular and “grape-like” clusters. They occur singly, in pairs, tetrads, and short chains.
What color is Staphylococcus?
S. aureus appears as staphylococci (grape-like clusters) when viewed through a microscope, and has large, round, golden-yellow colonies, often with hemolysis, when grown on blood agar plates.
What are the three different types of bacterial morphology?
Most bacteria come in one of three basic shapes: coccus, rod or bacillus, and spiral.
Does B subtilis need oxygen to grow?
subtilis is generally regarded as an aerobe, it can grow and sporulate slowly under strict anaerobic conditions. Given glucose, with nitrate as a terminal electron acceptor, it grows strongly anaerobically”.
What are anaerobic bacteria?
Anaerobic bacteria are germs that can survive and grow where there is no oxygen. For example, it can thrive in human tissue that is injured and does not have oxygen-rich blood flowing to it. Infections like tetanus and gangrene are caused by anaerobic bacteria.
How are the cells of Bacillus megaterium joined together?
The cells often occur in pairs and chains, where the cells are joined together by polysaccharides on the cell walls . In the 1960s, prior to the development of Bacillus subtilis, B. megaterium was the main model organism among Gram-positive bacteria for intensive studies on biochemistry, sporulation and bacteriophages.
When did Bacillus megaterium become a model organism?
In the 1960s, prior to the development of Bacillus subtilis, B. megaterium was the main model organism among Gram-positive bacteria for intensive studies on biochemistry, sporulation and bacteriophages. Recently, its popularity has started increasing in the field of biotechnology for its recombinant protein production capacity.
What kind of habitat does Bacillus megaterium live in?
Bacillus megaterium is a rod-like, Gram-positive, mainly aerobic spore forming bacterium found in widely diverse habitats.
What is the morphology of Bacillus subtilis germ?
Bacillus subtilis is a typical germ, which is rod-shaped and Gram-positive. When cultured on ordinary nutrient agar, the morphology circular colony of this bacteria is rough, opaque, fuzzy white or slightly yellow with jagged edges [1, 7].