E.coli is gram -ve and should stain pink in gram staining. The reason for its blue appearance is due to the over absorption of dye which can be due to either prolonged contact of dye or delay in washing or may be the concentration of soloution of dye is high
Gram positive
No, not all pathogenic bacteria are gram-negative. Pathogenic bacteria can be either gram-negative or gram-positive, depending on their cell wall structure. Some common gram-negative pathogenic bacteria include Escherichia coli, Pseudomonas aeruginosa, and Neisseria meningitidis, while some gram-positive pathogenic bacteria include Staphylococcus aureus, Streptococcus pneumoniae, and Enterococcus faecalis.
No, TB (Mycobacterium tuberculosis) is a gram-positive bacteria.
Archaebacteria are neither gram positive nor gram negative because they do not have peptidoglycan in their cell walls like bacteria. Instead, they have unique cell wall structures that make them distinct from both gram positive and gram negative bacteria.
Gram-negative bacteria are more commonly found in nature compared to gram-positive bacteria. This is because gram-negative bacteria have a more complex cell wall structure that allows them to survive in a wider range of environments. However, the exact prevalence of each type of bacteria can vary depending on the specific ecosystem or context being studied.
E. coli is a gram negative rod shaped bacteria (it is long and thin).
i believe it is a gram bacteria which causes respiratory illness.
Typical gram-positive bacteria are staphylococci; typical gram-negative bacteria are bacilli.
Gram-negative bacteria have a thinner peptidoglycan layer in their cell walls compared to gram-positive bacteria. Additionally, gram-negative bacteria have an outer membrane that contains lipopolysaccharides, which is absent in gram-positive bacteria.
pneumonia is a disease caused by the gram negative bacteria
Yes, gram-negative bacteria possess lipopolysaccharides.
Yes, endotoxins are produced by gram-negative bacteria.
Gram positive bacteria responds to the Gram stain; gram negative bacteria does not. The two bacteria do not respond to the same antibiotics. Right now the most dangerous bacteria is a gram negative bacteria. That could change.
Gram positive
Tetracycline kills both gram positive and gram negative bacteria. The mode of action to which Tetracycline works to kill bacteria is that it inhibits protein synthesis which works against both gram positive and gram negative bacteria.
pneumonia is a disease caused by the gram negative bacteria
No, gram-negative bacteria do not have peptidoglycan in their cell walls.