Mycobacteria stain weakly with gram stain, and bacteria such as Mycoplasma, Rickettsiae, Chlamydiae do not take up the dyes used in Gram stain or are too small to be seen with light microscopy. Not all bacteria can be visible in the Gram stain. This is the list of medically important bacte...
The Gram stain reveals distinct Gram-positive lancet-shaped cocci in pairs. Colony morphology is α hemolytic colony often mucoid appearing like a donut. Biochemical tests reveal bile solubility and are sensitive to optochin, using P disks. This differentiates S. pneumoniae from the other α ...
smegmatis Stain: Gram StainWhich of the following has been historically classified as Gram-negative bacteria but is genetically more similar to low G+C Gram-positive bacteria? A) mycoplasmas B) Mycobacterium C) Clostridium D) Propionibacterium E) Nocardia...
Gram staining is one of the protocols used to stain bacteria in the microbiology laboratory. In this protocol, two stains, crystal violet, and safranin, are used to stain bacteria. Answer and Explanation: The correct option is b. Legio...
do not possess a cell wall and, therefore, are not stained by Gram-stain reagents, this genus is still included with the low G+C gram-positive bacteria. The genus Mycoplasma includes more than 100 species, which share several unique characteristics. They are very small cells, some with a ...
are mucoid in culture and show nonvacuolated, coccoid bacilli on Gram stain; these organisms usually grow on MacConkey agar at temperatures up to 42°C.4 Rhizobiaceae. Rhizobium spp. and Agrobacterium spp. are members of the family Rhizobiaceae and are natural inhabitants of s...
Mycoplasma D. Bacillus and Clostridium What would a gram-negative bacteria look like if you forgot the alcohol step during the Gram stain procedure? Why? (a) What is gram staining? (b) Write the difference in gram-positive and gram-negative microorganisms. Why might colistin a...
Mycoplasma D. Bacillus and Clostridium Bacteria can get infected by a virus. What do we call a virus that infects bacteria? Which disease is caused by protozoa? Which bacteria is gram negative bacteria? Which of the ...
pneumoniae Stain: Negative Which group of bacteria contains the gram-positive, anaerobic bacterium that causes botulism? (a) clostridia (b) actinomycetes (c) enterobacteria (d) spirochetes (e) streptococci Identify what the following bacteria would look like stained with the listed s...
pneumoniae media, meningitis pneumolysin4 Bordetella pertussis filamentous pertussis (whooping cough) hemagglutinin, pertussis toxin, 69 kDa Omp5 Pseudomonas respiratory tract Omp OprF, aeruginosa exotoxin A6 Legionella pneumonia OmpS, Hsp607 pneumophila Mycoplasma upper and lower P18 pneumoniae respiratory ...