HESI A2 Exam Prep 2026

Real HESI A2 Questions.
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Practice with exam-accurate HESI A2 questions that match the real test in format, difficulty, and logic. Trusted by students accepted into nursing programs across the United States.

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Total Test Time
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About Microbiology & Pathogens

Unlike viruses, bacteria can reproduce independently without a host cell. Learn how this unique trait sets bacteria apart in microbiology.

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Microbiology & Pathogens HESI A2 Practice Questions

Free Microbiology & Pathogens practice questions for the HESI A2 exam with detailed rationales.

Question 1 of 2

Which of the following is a characteristic of bacteria but not viruses?
They can reproduce independently.
They require a host cell to replicate.
They can cause infectious diseases.
They contain genetic material (DNA or RNA).