Cards (6)

  • Name the structures in a HIV virus:
    A) Reverse Transcriptase
    B) RNA
    C) Capsid
  • The envelope of the HIV virus is made of...
    The host cell's membrane.
  • What is the role of attachment proteins?
    They enable the virus to attach to helper T cells.
  • How does HIV replicate?
    1. HIV is transported around in the blood until it attaches to a CD4 protein on a helper T cell.
    2. The HIV capsid fuses with the helper T cell's membrane, enabling the viral RNA and enzymes to enter.
    3. Reverse transcriptase copies the viral RNA into a DNA copy and moves it to the helper T cell nucleus.
    4. mRNA is transcribed. The helper T cell creates viral proteins to make new viral particles.
  • What disease can HIV lead to?
    AIDS (acquired autoimmune deficiency syndrome)
  • How does HIV leave to AIDS?
    Helper T cells are destroyed when the virus replicates in them. This means the host has an inadequate immune response, which heightens the risk of infections and cancer.