PQ : 6.5 + 6.6 - TB and HIV Flashcards
1
Q
A
B
2
Q
A
3
Q
Describe how HIV particles are able to enter T helper cells. (3)
A
4
Q
(ii) Explain why the destruction of T helper cells causes the symptoms of AIDS.
(4)
A
5
Q
(i) Deduce why this mutation makes these people resistant to HIV infection.
(2)
A
6
Q
A
7
Q
A
8
Q
A
9
Q
M.tuberculosis bacteria can remain dormant in the body after infection.
Explain why these dormant bacteria are not destroyed by the immune system.
A
10
Q
A
11
Q
A
