$$ \text{DNA} \rightarrow \text{DNA} $$

$$ \text{Ag} + \text{Ab} \rightarrow \text{Ag-Ab complex} $$

Question 1

Which of the following best describes the difference between prokaryotic and eukaryotic cells?

Accepted Answer

Eukaryotic cells have a nucleus, while prokaryotic cells lack a nucleus.

Question 2

Which enzyme produced by Staphylococcus aureus helps the bacterium evade host defenses by clotting plasma?

Accepted Answer

Coagulase

Question 3

A patient presents with a bull’s eye rash after hiking in a wooded area. Which disease is most likely responsible?

Accepted Answer

Lyme disease

Question 4

Which of the following is a cytopathic effect commonly observed in viral infections?

Accepted Answer

Cell lysis

Question 5

Which of the following statements about endotoxins is correct?

Accepted Answer

Endotoxins are part of the outer membrane of Gram-negative bacteria.

Question 6

Which process is described by the equation $$ 	ext{Glucose} + 2 	ext{ADP} + 2 	ext{P}_i ightarrow 2 	ext{Lactate} + 2 	ext{ATP} $$?

Accepted Answer

Fermentation

Question 7

Which of the following is NOT a function of the complement system?

Accepted Answer

Antibody production

Question 8

A child receives the MMR-Var vaccine. Which diseases does this vaccine protect against?

Accepted Answer

Measles, Mumps, Rubella, Varicella

Question 9

Which of the following is a portal of exit for pathogens?

Accepted Answer

Skin lesions

Question 10

Which structure is responsible for antigen presentation to T helper cells?

Accepted Answer

Dendritic cell

Question 11

Which of the following best describes the mechanism of action of tetracycline?

Accepted Answer

Inhibits protein synthesis by binding to the 30S ribosomal subunit

Question 12

Which equation represents the process of DNA replication?

Accepted Answer

$$ 	ext{DNA} ightarrow 	ext{DNA} $$

Question 13

A patient develops neonatal gonorrheal ophthalmia. Which organism is responsible?

Accepted Answer

Neisseria gonorrhoeae

Question 14

Which of the following is a characteristic of humoral immunity?

Accepted Answer

Production of antibodies by B cells

Question 15

Which vaccine type is represented by the equation $$ 	ext{Toxoid} = 	ext{Inactivated toxin} $$?

Accepted Answer

Toxoid vaccine

Question 16

Which of the following is a common cause of bacterial meningitis in young adults?

Accepted Answer

Neisseria meningitidis

Question 17

Which equation best represents the antigen-antibody interaction?

Accepted Answer

$$ 	ext{Ag} + 	ext{Ab} ightarrow 	ext{Ag-Ab complex} $$

Question 18

Which of the following is a vector-borne disease caused by Rickettsia rickettsii?

Accepted Answer

Rocky Mountain spotted fever

Question 19

Which process is described by the equation $$ 	ext{DNA} ightarrow 	ext{RNA} ightarrow 	ext{Protein} $$?

Accepted Answer

Central dogma of molecular biology

Question 20

A patient presents with flaccid paralysis after consuming contaminated food. Which toxin is most likely responsible?

Accepted Answer

Botulinum toxin

Microbiology Final Exam Study Guide: Key Topics and Review Focus

Study Guide - Practice Questions