Microbiology Exam Three Questions and answers

Microbiology Exam Three Which bacteria is most sensitive to Penicillin? - ANS Staphylococcus Aureus Types of Staphylococcus - ANS Aureus Epidermidis Saprophyticus Staphylococcus Saprophyticus - ANS Coagulase-negative species of staphylococcus bacteria. It is implicated in Urinary Tract Infections. It is resistant to the antibiotic Novobiocin. Usually susceptible to antibiotics commonly prescribed for patients with UTI, with the exception of nalidixic acid. Staphylococcus Epidermidis - ANS One of 33 known species belonging to the genus staphylococcus. It is part of human skin flora (commensal) and consequently part of human flora. Due to contamination, it is probably the most common species found in laboratory tests. It is a major concern for people with catheters or other surgical implants because it is known to cause biofilms that grow on these devices. They are often resistant to antibiotics including penicillin, amoxicillin, and methicillin. What devices is it known for Staphylococcus Epidermidis biofilms to grow on? - ANS Hip and knee replacements and Heart Valve replacements Staphylococcus Aureus - ANS Skin infections: A. Scaled Skin Syndrome B. Toxic Shock Syndrome C. Impetigo D. Boils and carbuncles Staphylococcal Scalded Skin Syndrome (SSSS) - ANS An exfoliative skin disease which causes the outer layer of the epidermis to be separated from the underlying tissues. Symptoms associated with the disease are a fever, malaise, and irritability following an upper respiratory infection.