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Q. (a) In droplet infection (i) where do the droplets come from,
(ii) what infective agents might they contain?
(b) Give two examples of diseases normally spread by droplets.
(a) (i) Droplets come from the respiratory passages (bronchi, trachea, nose) and the mouth.
(ii) Droplets might have bacteria or viruses.
(b) Instance of infections spread by droplets are tuberculosis, colds, influenza, measles, chicken pox
What is Gene therapy Gene therapy targets non germ line cells, ie somatic cells, so will not directly affect gene pool. The frequency of the allele for the genetic disease w
Provide supporting evidence to explain how conversion of a normal somatic cell into a malignant one requires multiple mutations.
RNA editing is the name given to several reactions whereby the nucleotide series on an mRNA molecule should be modified by mechanisms other than RNA splicing. T
ANTIBIOTICS - Chemicals produced by microorganism that inhibit the growth of other microorganism. Such microorganism which produces the antibiotics are antibiont . Wh
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What is Erythropoietin (EPO) A. is secreted by peritubular interstitial cells of the kidney cortex. B. acts by increasing the production of red blood cells by cells in
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what is the basic structure of a virus?
Two parents who are each known to be carriers of an autosomal recessive allele have four children. None of the children has the recessive condition. What is the probability that
In which meiotic division does the separation of the homologous occur? What are the ploidies of the generated cells after the end of that process? The separation of the homolog
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