Multiple choice

Which antigenic particle present in the serum of individuals infected with the virus hepatitis B, contains both DNA and DNA polymerase?

  1. p7 nucleocapsid protein

  2. A spherical 22 nm particle

  3. Dane particle

  4. Tubular or filamentous 22 nm particle

  5. GP 120 envelope protein
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The virus particle consists an outer lipid envelope and an icosahedral nucleocapsid core composed of protein. These virions are 42 nm in diameter and are sometimes referred to as Dane particles. This is known as the Dane particle as it was discovered by Dane in 1970. The nucleocapsid encloses the viral DNA and a DNA polymerase that has reverse transcriptase activity.

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