Which of the following method is particularly useful for separating isoenzymes 

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#Question id: 18072

#Unit 11. Evolution and Behavior

First invertebrates insects fossil appeared in which of the following geological ages?

a) Mesozoic b) Jurassic

c) Paleozoic d) Devonian

e) Permian f) Pennsylvanian

Which of the following combinations give the best answer?

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#Question id: 18073

#Unit 11. Evolution and Behavior

During which geological period was there an first definite evidence of land plants and algae dominant of many plants?

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#Question id: 18074

#Unit 13. Methods in Biology

Affinity chromatography on oligo(dT)-cellulose columns, is used for eukaryotic mRNA extraction, instead of using oligo(dT)-cellulose we can also use

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#Question id: 18075

#Unit 13. Methods in Biology

At high salt concentrations, the mRNA containing poly(A) tails binds to the complementary oligo(dT) molecules of the affinity column, and so, mRNA will be retained; all other RNA molecules can be washed through the column by further high salt solution. finally, the bound mRNA can be eluted by using

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#Question id: 18076

#Unit 7. System Physiology – Animal

Conflict occurs when we have to choose between ______.

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#Question id: 18077

#Unit 7. System Physiology – Animal

During which stage of the general adaptation syndrome (GAS) does the body adjust to the new stressor?