Blood banks test every donated unit of blood for HIV primarily to
Correct answer: A. prevent transmission of the virus through transfusion
- A. prevent transmission of the virus through transfusion
- B. increase the storage life of the blood
- C. raise the red cell count of the unit
- D. detect anaemia in the donor
Explanation
One unit of infected blood can transmit HIV directly into the recipient's circulation, so screening donated blood is one of the most effective barriers to spread. The tests used have nothing to do with storage or cell counts.
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About Viruses
Viruses are acellular infectious particles made of genetic material enclosed by a protein capsid, sometimes with a lipid envelope. Their replication depends on a host cell and may follow lytic or lysogenic cycles, so viral structure and reproduction differ fundamentally from those of cellular organisms such as bacteria.
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