Showing posts with label Microbiology Chapter 21. Show all posts
Showing posts with label Microbiology Chapter 21. Show all posts

A 17-year-old boy has pus-filled cysts on his face and upper back. Microscopic examination reveals gram-positive rods. This infection is caused by

A 17-year-old boy has pus-filled cysts on his face and upper back. Microscopic examination reveals gram-positive rods. This infection is caused by



A) Acanthamoeba.
B) herpes simplex virus.
C) Propionibacterium acnes.
D) Staphylococcus aureus.
E) Streptococcus pyogenes


Answer: propionibacterium acnes

Which of the following pairs is mismatched?

Which of the following pairs is mismatched?



A) chickenpox — poxvirus
B) conjunctivitis — Chlamydia trachomatis
C) keratitis — Acanthamoeba
D) otitis externa - Pseudomonas
E) Buruli ulcer — Mycobacterium


Answer: chickenpox - poxivirus

Assume that your lab partner swabs the side of his face and uses the swab to inoculate a nutrient agar plate. The next day, he performs a Gram stain on the colonies. They are gram-positive cocci. You advise him that he should next look for

Assume that your lab partner swabs the side of his face and uses the swab to inoculate a nutrient agar plate. The next day, he performs a Gram stain on the colonies. They are gram-positive cocci. You advise him that he should next look for



A) an acid-fast reaction.
B) a coagulase reaction.
C) conidiospores.
D) pseudohyphae.
E) pseudopods


Answer: a coagulase reaction

Which of the following is incorrectly matched?

Which of the following is incorrectly matched?



A) Haemophilus influenzae — pinkeye
B) Chlamydia trachomatis — trachoma
C) Neisseria gonorrhea — opthalmia neonatorum
D) Acanthamoeba — keratitis
E) Pseudomonas — inclusion conjunctivitis


Answer: pseudomonas - inclusion conjunctivitis