Short Answer TypeDifferentiate the following and give examples of each:
Active and passive immunity
|
Active immunity
|
Passive immunity
|
|
1. Immunity is provided by the antibodies synthesised by the body. |
1. Immunity is provided by the pre-formed antibodies that are injected in to the host organism. |
|
2. Does not need a booster dose. |
2. Needs a booster dose. |
|
3. It is slow and has a lag phase, immunity is not immediate. |
3. It provides immediate protection and is fast. |
|
4. Memory is there. |
4. No memory present. |
What are the various routes by which transmission of human immuno-deficiency virus takes place?
Long Answer TypeWhat is the mechanism by which the AIDS virus causes deficiency of immune system of the infected person?
Short Answer TypeLong Answer TypeWhy is that once a person starts taking alcohol or drugs, it is difficult to get rid of this habit? Discuss it with your teacher.
In your view what motivates youngsters to take to alcohol or drugs and how can this be avoided?
Short Answer TypeHow does the transmission of each of the following diseases take place?
(a) Amoebiasis
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