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HIV
The human immunodeficiency virus (HIV) causes
the disease AIDS (acquired immune deficiency
syndrome)
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Replication of HIV:

How it causes AIDS:

Being a virus, it cannot replicate itself
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It causes
AIDS by killing or interfering with the normal functioning of helper T cells
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In a person suffering from AIDS,
it can be as low as 200mm-3
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Many
sufferers develop infections of the lungs/intestines/
brain and eyes/ weight loss and diarrhoea
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while this protein occurs on a number of different cells, HIV most frequently attaches to helper T
cells

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The protein capsid fuses with the cell-surface membrane
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Inside the
envelope is a protein layer called the capsid that
encloses two single strands of RNA and some enzymes
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The ELISA test:
Enzyme linked immunosorbent assay
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Extremely sensitive and so can
detect very small amounts of a molecule
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The newly made DNA is moved into the helper T cells
Why antibiotics are ineffective against viral diseasnucleus where its inserted into the cells DNA
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required for the synthesis and assembly of the
The mRNA passes out of the nucleus through to a nupeptide cross-linkages in bacterial cell walls
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stand pressure
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Viruses
of tis cell-surface membrane surrounding them which rely on host cells to carry out their metabolic activforms their lipid envelope
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