IB Biology · A2.3 · HL

A2.3 Viruses

10 review questions with answers for A2.3 Viruses, marked HL. Read them here, or play the set as a class game on the projector. Free to host, and students join with a code.

A question from this set

General term for any non-cellular infectious agent made of nucleic acid in a protein coat?

  • Envelope
  • Capsid
  • VirusRight answer
  • Prophage
From A2.3 Viruses, 10 questions.

All 10 questions and answers

  1. General term for any non-cellular infectious agent made of nucleic acid in a protein coat?

    Answer: Virus

  2. The protein shell that encloses the viral genome?

    Answer: Capsid

  3. Outer lipid layer found in some viruses, derived from the host cell membrane?

    Answer: Envelope

  4. Virus that specifically infects and replicates within bacteria?

    Answer: Bacteriophage

  5. Viral life cycle in which new virions are made and then released by bursting (lysing) the host cell?

    Answer: Lytic Cycle

  6. Life cycle where viral DNA integrates into the host genome and replicates silently?

    Answer: Lysogenic Cycle

  7. Integrated viral DNA within a bacterial host's genome?

    Answer: Prophage

  8. Enzyme used by retroviruses (like HIV) to turn RNA into DNA?

    Answer: Reverse Transcriptase

  9. Term for viruses, because they can only replicate inside a living host cell?

    Answer: Obligate intracellular parasites

  10. The two chemical components found in all viruses?

    Answer: Nucleic acids and Proteins

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