test to differentiate between staphylococcus and streptococcus

The catalase test is a particularly important test used to determine whether the Gram + cocci is a staphylococci or a streptococci. Catalase is an enzyme that converts hydrogen peroxide to water and oxygen gas. The test is easy to perform; bacteria are simply mixed with H 2O 2.

1. How do you differentiate between staphylococcus and streptococcus?
2. What is a good first test to distinguish streptococcal infections from staphylococcal infections?
3. What test is used to distinguish between staphylococci and streptococci quizlet?
4. What tests are used to identify Staphylococcus?
5. Where are staphylococcus and streptococcus bacteria found?
6. What characteristic do staphylococcus and streptococcus share?
7. What infections do staphylococcus and streptococcus cause?
8. What illness does staphylococcus cause?
9. What kind of disease does streptococcus cause?
10. Why is it important to distinguish Streptococcus pyogenes from other streptococci?
11. What are the effects of the α hemolysin produced by Staphylococcus aureus?
12. What single test differentiates Staphylococcus aureus from other species of staphylococci What is the expected result?

How do you differentiate between staphylococcus and streptococcus?

Streptococci are Gram-positive cocci that grow in pairs or chains. They are readily distinguished from staphylococci by their Gram-stain appearance and by a negative catalase test. More than 30 species have been identified. The classification of streptococci is complex and is based on a combination of features.

What is a good first test to distinguish streptococcal infections from staphylococcal infections?

The catalase test is important in distinguishing streptococci (catalase-negative) staphylococci which are catalase positive.

What test is used to distinguish between staphylococci and streptococci quizlet?

One of those ways is to make catalase. The catalase test is most often used to distinguish Streptococcus from Staphylococcus. Remember that Streptococcal species are capnophilic, and therefore do not produce catalase.

What tests are used to identify Staphylococcus?

Coagulase testing is the single most reliable method for identifying Staphylococcus aureus [9]. Coagulase production can be detected using either the slide coagulase test (SCT) or the tube coagulase test (TCT).

Where are staphylococcus and streptococcus bacteria found?

Staphylococci are found on the skin. Streptococci are found in the respiratory tract. No hemolysis or beta hemolysis.

What characteristic do staphylococcus and streptococcus share?

Staphylococci and Streptococci are grouped as Gram-positive cocci. Staphylococci form clumps, whereas Streptococci grow in chains. They can be discriminated by catalase test because Staphylococci have the capability to produce catalase [2].

What infections do staphylococcus and streptococcus cause?

In adults, it can cause urinary tract infections, blood infections, skin infections and pneumonia. Antibiotics are used to treat strep infections.

What illness does staphylococcus cause?

It is the leading cause of skin and soft tissue infections such as abscesses (boils), furuncles, and cellulitis. Although most staph infections are not serious, S. aureus can cause serious infections such as bloodstream infections, pneumonia, or bone and joint infections.

What kind of disease does streptococcus cause?

Streptococci are gram-positive aerobic organisms that cause many disorders, including pharyngitis, pneumonia, wound and skin infections, sepsis, and endocarditis. Symptoms vary with the organ infected. Sequelae of infections due to group A beta-hemolytic streptococci may include rheumatic fever and glomerulonephritis.

Why is it important to distinguish Streptococcus pyogenes from other streptococci?

Streptococcus pyogenes can be differentiated from other non-group A β-hemolytic streptococci by their increased sensitivity to bacitracin. The bacitracin test, along with the Lancefield antigen A test, is used for greater specificity in the identification of S. ... The bacitracin test is also used to distinguish S.

What are the effects of the α hemolysin produced by Staphylococcus aureus?

Alpha-hemolysin from Staphylococcus aureus can cause severe diseases, such as pneumonia. Aerolysin from Aeromonas sobria infects the intestinal tract, but it might also cause sepsis and meningitis.

What single test differentiates Staphylococcus aureus from other species of staphylococci What is the expected result?

What test differentiates Staph aureus from other species of staphylococcus? Coagulase test: Staph aureus is the only one that is coagulase positive. How do you differentiate Staph epidermidis from Staph saprophyticus? Epidermidis is novobiocin SENSITIVE, while saprophyticus is novobiocin RESISTANT.