QuestionSBA
QuestionChoice
All fungi, such as *Candida albicans* stain Gram-positive. However, budding cells, not chains would be seen on microscopy. *Candida albicans* is a yeast that is the causative organism of thrush, not pharyngitis.
10004780
e
*Candida albicans*
QuestionChoice
*Clostridium difficile* is a Gram-positive organism that is a major hospital concern due to its resistance and opportunism. It is most often associated with a serious bacterial infection following an antibiotic course. *Clostridium difficile* would not cause symptoms of pharyngitis and is a rod, not coccus bacteria.
10004779
d
*Clostridium difficile*
QuestionChoice
This is a classical description of streptococcal sore throat or streptococcal pharyngitis. Gram stain will reveal Gram-positive (purple) cocci (round) bacteria in a chain-like appearance.

Tip: Remember Gram Positive as the 3 P's --  positive, peptidoglycan and purple!
10004776
a
*Group A Streptococcus*
QuestionChoice
*Staphylococcus aureus* is a Gram-positive bacterium that stains positively. The expected appearance is of grape-like clusters, not chains. *Staphylococcus aureus* is a commensal organism on skin and nose surfaces and does not cause pharyngitis.
10004777
b
*Staphylococcus aureus*
QuestionChoice
*Neisseria gonorrhoeae* is the causative organism for gonorrhoea. Although it is a cocci (diplococci), it stains Gram-negative and is not associated with causing pharyngitis.
10004778
c
*Neisseria gonorrhoeae*
Concept
Chapter
2693
4332
Streptococcal sore throat
Topic
194
Infectious Diseases
13502
A 34-year-old woman presents to the GP with a fever, headache and tonsillitis. Throat swabs are taken and Gram stained to reveal Gram-positive cocci in a chain-like appearance.

Which of the following is the most likely causative organism?
a