What would be the molar concentration of human DNA in a human
cell? Consult your teacher.
From what you have learnt, can you tell whether enzymes are bigger or
DNA is bigger in molecular size? How did you know?
Make a chart (with diagrammatic representation) showing a restriction
enzyme, the substrate DNA on which it acts, the site at which it cuts
DNA and the product it produces.
Can you list 10 recombinant proteins which are used in medical
practice? Find out where they are used as therapeutics (use the internet).
Arrange the following in the decreasing order (most important first) of
their importance, for the welfare of human society. Give reasons for
your answer.
Biogas, Citric acid, Penicillin and Curd
Find out the role of microbes in the following and discuss it with your teacher.
(a) Single cell protein (SCP)
(b) Soil
Find out the name of the microbes from which Cyclosporin A (an
immunosuppressive drug) and Statins (blood cholesterol lowering
agents) are obtained.
Three water samples namely river water, untreated sewage water and
secondary effluent discharged from a sewage treatment plant were
subjected to BOD test. The samples were labelled A, B and C; but the
laboratory attendant did not note which was which. The BOD values
of the three samples A, B and C were recorded as 20mg/L, 8mg/L and
400mg/L, respectively. Which sample of the water is most polluted?
Can you assign the correct label to each assuming the river water is
relatively clean?
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