Sputum cultures show a capsulated gram-positive cocci in pairsthat is bile soluble, oxidase negative, and coagulase negative.Which of the following tests would be positive for themicroorganism found in culture?
A) Sensitivity to novobiocin
B)Resistance to optochin
C)Sensitivity to optochin
D)Sensitivity to bacitracin
E)Catalase test
The exudate from an abscess is Gram-stained and cultured onblood agar. The Gram’s stain reveals purple cocci in large clumps.On blood agar, the colonies break down hemoglobin to a colorlessproduct, and when hydrogen peroxide is added, gas bubbles areproduced from the surface of the colonies. When the organisms areadded to tubes of animal serum, a fibrous clot is formed andclumping results. These characteristics are most consistent withwhich of the following organisms?
Group of answer choices
Pseudomonas aeruginosa
Streptococcus pneumoniae
Escherichia coli
Staphylococcus aureus
