Are all streptococcus lanceolated? or all ovoid? We got Strep pyogenes, Strep agalactiae, Enterococcus faecalis, Strep...

Are all streptococcus lanceolated? or all ovoid? We got Strep pyogenes, Strep agalactiae, Enterococcus faecalis, Strep bovis, Viridans strep, Strep pneumoniae. Can someone help me with the colony morphology of each one? like which one is in chains and which are in pairs? and which are ovoid and which are lanceolated?

Expert Solution

Strep pyogens	It is a round or ovoid shaped gram positive,non motile ,non sporing pus forming bacteria.It links in a chain of round cells.It can grow in the absence of oxygen.Growth is stimulated by incubating in CO2 environment.It stains purple when gram stain method is used.
Strep agalactiae	It is a gram positive coccus round or ovoid bacteria. It has a tendency to form chains.It requires an enriched medium.older cuture loses its gram positive nature
Enterococcus faecalis	It is a gram positive, ovoid,non motile microbe found in pairs or short chains.Forms a alpha hemolytic colony.
Strep bovis	It is a gram positive bacteria, occurs in pairs or in chains.When incubated with aflatoxin B1 grew in long chains whereas cells in control culture where doublets
Viridans strep	This is gram positive bacteria, ovoid.They are alpha hemolytic producing green coloration on blood agar.
Strep pneumoniae	It is a gram positive,lancet shaped diplococci non motile. Hemolytic colonies appears raised in 1 to 2 days where the colonies are flattened with depressed center and is called as draughtsman colony.When cultured on blood agar they are alpha hemolytic

Nightingale answered 2 years ago

Can someone differentiate between Streptococcus pyogenes causing strep throat and Streptococcus pyogenes causing scarlet fever? Thank...

Can someone differentiate between Streptococcus pyogenes causing strep throat and Streptococcus pyogenes causing scarlet fever? Thank you

Throat swab from red inflamed throat – Streptococcus pyogenes, Streptococcus pneumonia and Enterococcus facecalis Which plates...

Throat swab from red inflamed throat – Streptococcus pyogenes, Streptococcus pneumonia and Enterococcus facecalis Which plates are you going to use to culture the material? Choose two and explain use What is the ingredient in the selective plate? What is the ingredient in the differential plate? What would you see if this plate has growing on it? What antibiotic would you suggest (Use the figure from Ch12 in the Cowan book)

what antimicrobial agent is most commenly used to treat Streptococcus Pyogenes (strep throat) infections?

Why are staphlyococcus, streptococcus and enterococcus species major concerns in the healthcare environment?

How can Streptococcus pyogenes initially be differentiated from other Streptococcus species that form part of the throat...

How can Streptococcus pyogenes initially be differentiated from other Streptococcus species that form part of the throat normal microbiotia? By morphology—the bacteria are spherical and grow in long chains. By detection of the "A" carbohydrate in its cell wall using antibodies. By culturing the bacteria on nutrient agar and checking for hemolysis. By Gram staining—it is a Gram-positive organism. By specific disease signs and symptoms, including sore throat and fever.

Research and describe the infection chain for Strep throat, which is caused by a different Streptococcus...

Research and describe the infection chain for Strep throat, which is caused by a different Streptococcus found in the upper respiratory tract (1p each). 1. Causative agent: 2. Reservoir: 3. Portals of entry AND exit: 4. Mode(s) of transmission: 5. Ways to BREAK the chain

determine whether the following refers to staphylococcus aureus, streptococcus pyogenes, nether or both.

determine whether the following refers to staphylococcus aureus, streptococcus pyogenes, nether or both. 1. erythrogenic toxins 2. clusters of cells 3. catlaise postive 4. gram postive 5. necrotizing fasciitis 6. pencililn resitant 7. Toxic Shock syndrome 8. endotoxins

You are studying a strain of Streptococcus pyogenes that has acquired a brand new gene from...

You are studying a strain of Streptococcus pyogenes that has acquired a brand new gene from horizontal gene transfer, which seems to give it resistance to chloramphenicol. Hypothesize two mechanisms by which the new gene could be conferring resistance to chloramphenicol in S. pyogenes.

You think you have a culture of Streptococcus pyogenes, but you may have mixed it up...

You think you have a culture of Streptococcus pyogenes, but you may have mixed it up with another Gram-positive organism. By referring to the flow chart in this exercise, list in order the two tests you should do to confirm that the culture is in factStreptococcus pyogenes, AND explain what the correct result should look like for both tests.

my bacteria is streptococcus pyogenes Choose one species of bacteria on the "Choose Your Bacterium" wiki...

my bacteria is streptococcus pyogenes Choose one species of bacteria on the "Choose Your Bacterium" wiki page. Prepare a wiki addressing all areas shown on the example wiki page. Culture Requirements: Culture Requirements: Media: sheep blood agar supplemented with 5% malted barley extract Atmosphere: 10% oxygen and 20% carbon dioxide Temperature: 30 - 35 oC Biochemical Test Reactions: [include photos of these in your wiki] catalase positive oxidase negative etc. Interesting or Unusual Characteristics: This organism can be found growing...

Question