Immune System Flashcards
1
Q
Explain how hiv is replicated
A
- attachment proteins attach to receptors on helper T cell
- RNA enters cell
- reverse transcriptase converts RNA to DNA
- viral protein produced
- virus assembles and released
2
Q
How is HIV replicated once in Th cells
A
- RNA converted into DNA using reverse transcriptase
- DNA inserted into helper T cell DNA
- DNA transcribed into HIV m RNA
- Accept descriptions of transcription
- HIV mRNA translated into HIV
3
Q
How do phagocytes destroy pathogens
A
- engulf
- phagosome fuse with Lysome
- else lysozome hydrolyses
4
Q
How does hiv affect production of antibodies when Develops into aids
A
- No antibodies produced
- as hiv destroys t helper cells
- no B cells undergo mitosis
5
Q
How can virus infect other species
A
- Virus DNA mutates
- alters viral attachment protein
- allows virus to bind to receptor of other species
6
Q
Determining genome allows for decoupled of vaccine how
A
- Identify proteins
- identify antigens to use in vaccines
7
Q
Hw would B cell response to vaccine
A
- B cell attracted to specific complementary antigen
- B cell clone and diffferntaite
- plasma cell produce antibodies
- b memory cells
