Streptococcus, staphylococcus

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What is Streptococcus?

Back

A genus of spherical bacteria that are known to cause various infections, including strep throat and pneumonia.

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What is Staphylococcus?

Back

A genus of bacteria that are typically found on the skin and in the respiratory tract, some species of which can cause infections.

Front

What is the significance of S. saprophyticus?

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It is a coagulase-negative staphylococcus that is commonly associated with urinary tract infections, especially in young women.

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What is the primary characteristic of S. saprophyticus?

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Ability to break down sucrose.

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What is coagulase?

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An enzyme produced by some bacteria, including Staphylococcus aureus, that causes blood to clot.

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What is hemolysis?

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The breakdown of red blood cells, which can be a characteristic of certain bacterial species.

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What is the role of plasmocoagulase?

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An enzyme that can cause coagulation of plasma, often associated with pathogenic staphylococci.

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What is phosphatase?

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An enzyme that removes phosphate groups from molecules, which can be a characteristic of certain bacteria.

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What are the main types of Streptococcus based on hemolytic activity?

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Alpha-hemolytic, beta-hemolytic, and gamma-hemolytic.

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What infections are commonly caused by Streptococcus pyogenes?

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Strep throat, scarlet fever, and rheumatic fever.