Which virus is not a DNA enveloped virus?

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Study for the NBEO Microbiology exam. Prepare with flashcards and multiple choice questions, each with hints and explanations. Get ready for your exam!

Multiple Choice

Which virus is not a DNA enveloped virus?

Explanation:
The key idea is distinguishing viruses by genome type and whether they have a lipid envelope. Hepatitis A is not a DNA enveloped virus because it is an RNA virus (positive-sense single-stranded RNA) and lacks a lipid envelope. In contrast, the other options are DNA viruses that do have envelopes: Hepatitis B is a DNA virus with an envelope, and HSV-1 and CMV are enveloped DNA viruses (herpesviruses). Enveloped viruses are typically more susceptible to detergents and desiccation, while non-enveloped RNA viruses like Hepatitis A are more stable in the environment and often transmitted fecal-orally.

The key idea is distinguishing viruses by genome type and whether they have a lipid envelope. Hepatitis A is not a DNA enveloped virus because it is an RNA virus (positive-sense single-stranded RNA) and lacks a lipid envelope. In contrast, the other options are DNA viruses that do have envelopes: Hepatitis B is a DNA virus with an envelope, and HSV-1 and CMV are enveloped DNA viruses (herpesviruses). Enveloped viruses are typically more susceptible to detergents and desiccation, while non-enveloped RNA viruses like Hepatitis A are more stable in the environment and often transmitted fecal-orally.

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