Microbiology Case Study 2 Quiz Answers

Microbiology Case Study 2 Quiz
Question 1

Question

Match the following terms:

1.​ Antibiotic that is manufactured chemically
2.​ Antibiotic that is a chemically modified natural substance
3.​ Antibiotic that is made by microorganisms

Answer

1️⃣ Synthetic​
2️⃣ Semisynthetic​
3️⃣ Natural

Explanation

●​ Natural antibiotics are produced directly by microorganisms​
Example: penicillin
●​ Semisynthetic antibiotics are natural antibiotics that have been chemically modified
to improve effectiveness​
Example: amoxicillin
●​ Synthetic antibiotics are fully produced in laboratories using chemical processes​
Example: sulfonamides, fluoroquinolones

Key exam tip:

Know the difference between natural vs semisynthetic vs synthetic antibiotics




Question 2

Question

Which condition is associated with a high rate of recurrence and often does not respond to
first-line antibiotics?

Options:

●​ Uncomplicated UTI
●​ Complicated UTI
●​ Upper UTI

, ●​ Catheter-associated urinary tract infection (CAUTI)

Answer

✅ Complicated UTI
Explanation

Complicated UTIs are:

●​ more likely to recur
●​ more likely to involve antibiotic-resistant organisms
●​ less responsive to first-line antibiotics

Common causes include:

●​ urinary catheter
●​ urinary obstruction
●​ diabetes
●​ immunocompromised status
●​ pregnancy
●​ male patients
●​ anatomical abnormalities

Important note:

CAUTI is a type of complicated UTI, but the broader correct category is complicated UTI




Question 3

Question

Which factor does NOT typically contribute to the occurrence of a complicated urinary tract
infection (UTI)?

Options:

●​ Having a naturally shorter urethra
●​ Presence of a urinary catheter
●​ Being immunocompromised
●​ Having anatomical malformations or obstructions

Answer

✅ Having a naturally shorter urethra
Explanation