BIOD 351 Module 5 Exam: Anti-Infective Agents 2026/2027 UPDATE
1. Which of the following describes the primary mechanism of action for
Penicillins?
A. Inhibition of protein synthesis at the 50S ribosome
B. Inhibition of bacterial cell wall synthesis by binding to PBPs
C. Disruption of the bacterial cell membrane
D. Inhibition of DNA gyrase
Answer: B
Rationale: Penicillins are beta-lactam antibiotics that inhibit the final step of cell wall
synthesis by binding to penicillin-binding proteins (PBPs).
2. A patient with a documented severe anaphylactic reaction to Amoxicillin
should generally avoid which class of drugs due to cross-reactivity?
A. Fluoroquinolones
B. Macrolides
C. Cephalosporins
D. Tetracyclines
Answer: C
Rationale: Cephalosporins share a similar beta-lactam ring structure with penicillins, and
patients with severe penicillin allergies have an increased risk of cross-sensitivity.
,3. Which drug is often combined with Amoxicillin to protect it from degradation
by bacterial enzymes?
A. Tazobactam
B. Clavulanic acid
C. Sulbactam
D. Cilastatin
Answer: B
Rationale: Clavulanic acid is a beta-lactamase inhibitor that prevents the destruction of
amoxicillin by enzyme-producing bacteria.
4. Which generation of Cephalosporins is known for having the best coverage
against Gram-positive organisms but limited Gram-negative coverage?
A. First generation
B. Second generation
C. Third generation
D. Fourth generation
Answer: A
Rationale: First-generation cephalosporins (like cephalexin) are highly active against
gram-positive cocci but have narrow gram-negative activity.
5. Vancomycin is the drug of choice for treating which of the following
infections?
A. Invasive Candidiasis
B. Pseudomonas aeruginosa
C. Methicillin-resistant Staphylococcus aureus (MRSA)
D. Influenza A
Answer: C
Rationale: Vancomycin is a glycopeptide antibiotic primarily used to treat serious
infections caused by MRSA.
, 6. To prevent ‘Red Man Syndrome’ during Vancomycin administration, the
nurse should:
A. Administer the drug via rapid IV push
B. Keep the patient in a dark room
C. Infuse the drug over at least 60 minutes
D. Administer the drug with high-fat meals
Answer: C
Rationale: Red Man Syndrome is a rate-dependent infusion reaction caused by histamine
release; it is managed by slowing the infusion rate to 60 minutes or more.
7. Which antibiotic class is associated with the potential side effect of tendon
rupture, particularly the Achilles tendon?
A. Fluoroquinolones
B. Sulfonamides
C. Aminoglycosides
D. Macrolides
Answer: A
Rationale: Fluoroquinolones (like Ciprofloxacin) carry a black box warning for tendinitis
and tendon rupture, especially in older adults.
8. Tetracyclines should be avoided in children under 8 years old because they
can cause:
A. Acute renal failure
B. Permanent tooth discoloration
C. Severe hypertension
D. Irreversible hearing loss
Answer: B
Rationale: Tetracyclines bind to calcium in developing teeth, leading to permanent yellow-
brown staining and enamel hypoplasia.
1. Which of the following describes the primary mechanism of action for
Penicillins?
A. Inhibition of protein synthesis at the 50S ribosome
B. Inhibition of bacterial cell wall synthesis by binding to PBPs
C. Disruption of the bacterial cell membrane
D. Inhibition of DNA gyrase
Answer: B
Rationale: Penicillins are beta-lactam antibiotics that inhibit the final step of cell wall
synthesis by binding to penicillin-binding proteins (PBPs).
2. A patient with a documented severe anaphylactic reaction to Amoxicillin
should generally avoid which class of drugs due to cross-reactivity?
A. Fluoroquinolones
B. Macrolides
C. Cephalosporins
D. Tetracyclines
Answer: C
Rationale: Cephalosporins share a similar beta-lactam ring structure with penicillins, and
patients with severe penicillin allergies have an increased risk of cross-sensitivity.
,3. Which drug is often combined with Amoxicillin to protect it from degradation
by bacterial enzymes?
A. Tazobactam
B. Clavulanic acid
C. Sulbactam
D. Cilastatin
Answer: B
Rationale: Clavulanic acid is a beta-lactamase inhibitor that prevents the destruction of
amoxicillin by enzyme-producing bacteria.
4. Which generation of Cephalosporins is known for having the best coverage
against Gram-positive organisms but limited Gram-negative coverage?
A. First generation
B. Second generation
C. Third generation
D. Fourth generation
Answer: A
Rationale: First-generation cephalosporins (like cephalexin) are highly active against
gram-positive cocci but have narrow gram-negative activity.
5. Vancomycin is the drug of choice for treating which of the following
infections?
A. Invasive Candidiasis
B. Pseudomonas aeruginosa
C. Methicillin-resistant Staphylococcus aureus (MRSA)
D. Influenza A
Answer: C
Rationale: Vancomycin is a glycopeptide antibiotic primarily used to treat serious
infections caused by MRSA.
, 6. To prevent ‘Red Man Syndrome’ during Vancomycin administration, the
nurse should:
A. Administer the drug via rapid IV push
B. Keep the patient in a dark room
C. Infuse the drug over at least 60 minutes
D. Administer the drug with high-fat meals
Answer: C
Rationale: Red Man Syndrome is a rate-dependent infusion reaction caused by histamine
release; it is managed by slowing the infusion rate to 60 minutes or more.
7. Which antibiotic class is associated with the potential side effect of tendon
rupture, particularly the Achilles tendon?
A. Fluoroquinolones
B. Sulfonamides
C. Aminoglycosides
D. Macrolides
Answer: A
Rationale: Fluoroquinolones (like Ciprofloxacin) carry a black box warning for tendinitis
and tendon rupture, especially in older adults.
8. Tetracyclines should be avoided in children under 8 years old because they
can cause:
A. Acute renal failure
B. Permanent tooth discoloration
C. Severe hypertension
D. Irreversible hearing loss
Answer: B
Rationale: Tetracyclines bind to calcium in developing teeth, leading to permanent yellow-
brown staining and enamel hypoplasia.
