1)Why a person suffering from AIDS cannot fight even small infections?
2)in a slum area, many people are suffering from malaria. Mention any two
unhygienic conditions that must be prevailing in that locality.
3)Why female Anopheles mosquito feeds on human blood ? [SAlI - 2014)
Answers
1.In HIV infection, the virus reaches the immune system and damages its function. As the immune system weakens, the body will not be able to fight with even small infections like cold and this may lead to death very soon
1) AIDS caused by a virus called HIV virus, HIV virus after entering in our body multiples and affects our immune system to this much that our body becomes unable to fight against even small infections.
2) i. Drinking or eating contaminated food or water.
ii. Use of shared and infected syringes.
3) Female Anopheles mosquito feeds on human blood so to nourish themselves for child-bearing.
Our blood contains proteins and amino acids which make it perfect for them to get nourishment.
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