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(D) $HIV$ is a spherical virus with a diameter of about $90-120 \ nm$.Its genome consists of two identical molecules of single-stranded $RNA$ and is a

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Both $(b)$ and $(c)$.

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(D) $HIV$ is a spherical virus with a diameter of about $90-120 \ nm$.Its genome consists of two identical molecules of single-stranded $RNA$ and is associated with reverse transcriptase enzymes.The envelope consists of a lipid bilayer derived from the host cell membrane with projecting glycoprotein spikes.$HIV$ is a retrovirus that specifically attacks helper $T$ cells ($CD4^+$ cells).By destroying these cells,it cripples the acquired immune response,as the immune system cannot signal $B$ cells to produce antibodies effectively.This leads to a state of immune deficiency known as $AIDS$ (Acquired Immuno Deficiency Syndrome).

Which of the following is correct regarding $AIDS$ causative agent $HIV$?

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